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Call Progress Software Provides Full Tone Detection and Generation Functionality

Toronto, Canada - September 4th, 2013 - GAO Research Inc.(www.GAOResearch.com) has released its call progress software, which is a tonal signaling standard that is used to acquire connections between subscribers in telephone network systems and to indicate the status of incoming and outgoing phone calls. It features low data and program memory requirements and can be easily configured to different cadences and tones.

GAO's call progress software is available for a number of DSPs and microprocessors. It consists of two user-callable functions that perform the detection, generation, and initialization operations. It provides full call progress tone detection and generation functionality and operates on PCM samples. This software supports the following signals including Dial Tone, Busy Tone, Congestion Signal, Ring Back and Off Hook. In addition, it is implemented in assembly and C.

This Call Progress (CP) software belongs to GAO's family of Telephony Software. Other featured products in this line are Caller Identification (ID) Software which is based on the Bell 202 or the V.23 standard and can be used in applications such as analog or digital telephone, video conferencing, and answering machines; G.165 Line Echo Canceller Software used in long distance voice communication, especially in links involving satellite networks and intercontinental long-haul circuits; and Adaptive Noise Suppression Algorithm designed to adaptively suppress both stationary and non-stationary background noise from speech.

G.729, G.729A and G.729AB Speech Vocoders

Toronto, Canada - August 26th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its G.729, G.729A and G.729AB speech vocoders. GAO's G.729, G.729A & G.729AB vocoders are suitable for some special applications including visual telephony, wireless communications and digital satellite communication systems.

The G.729 speech vocoder series provide toll-quality speech with only moderate processing requirements and delay times. They also perform well in the presence of random bit errors. They comply with ITU-T G.729, G.729A & G.729AB standards which are based on Code Excited Linear Prediction Model (CELP) and Conjugate-Structure Algebraic CELP (CS-ACELP). The ITU-T G.729 standard offers superior bandwidth utilization making it an excellent alternative to applications that formerly used 32 kbps ADPCM. Also, the G.729A ITU-T standard for voice coding compresses 8 kHz linear audio signals and encodes them for transmission at 8 kbps with reduced complexity compared to G.729.

These high performance embedded G.729 speech vocoder series belongs to GAO Research's family of Speech Vocoders. This line also contains other featured software products including G.711 Vocoder which implements independent user-callable functions that perform all of the ¦̀-law and A-law encoding and decoding operations; G.722 Vocoder in conformance with the ITU-T H.320 standard for video conferencing; and G.726 Vocoder used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

Embedded MF R1 R2 Software Used for Inter-Register Signaling

Toronto, Canada - August 19th, 2013 - GAO Research Inc.(www.GAOResearch.com) has released its MF R1/R2 software designed with highly optimized assembly or C implementation. Signaling systems R1 and R2 are used for inter-register signaling. The R1 signaling system is specified by the ITU-T as the North American standard and the R2 signaling system is used in Europe.

This MF R1/R2 software features low data and program memory requirements. It is an implementation of ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment. Both signaling systems R1 and R2 consist of two parts: Line signaling and Register signaling. Line signaling is used to handle line and supervisory signals. Register signaling is used for address signals.

R1 and R2 line signaling operates in a digital transmission environment and operations are handled by signaling bits. R1 Register signaling handles address signals using MF in-band pulse signaling at frequencies of 700 Hz to 1700 Hz at 200 Hz increments. The combination of two of these frequencies determines the signal. R2 Register signaling handles address signals by sending a combination of two fundamental frequencies. The R2 system uses two different sets of six frequencies to combine for the forward and backward signals.

The MF R1/R2 software belongs to GAO's family of Telephony Software. Other featured products in this line include Automatic Gain Control Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases; Caller Identification Software which consists of two user-callable functions that perform the initialization and identification operations; and Call Progress (CP) software which provides full call progress tone detection and generation functionality and operates on PCM samples.

Embedded V.17 Fax Software Allows for Standalone and Multi-Tasking Operation

Toronto, Canada - August 12th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering this V.17 Fax Software which is able to operate on a variety of DSPs and processors. It is also capable of operation within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic.

The V.17 fax software implements the ITU-T V.17 recommendation for two-wire modem for facsimile applications with data rates up to 14,400bps. It is compatible with commonly used processors such as TI C5000 and C6000 series DSPs, ARM processors and ADI DSPs and operates under such operating systems as Windows, VxWorks, and Linux. It provides exchange of rate sequences during start-up to establish the data-rate, coding, and any other special facilities. QAM is used as the modulation scheme providing synchronous line transmission at 2400 baud.

The embedded V.17 fax modem software belongs to GAO Research's family of Fax Software. Other featured products in this line include V.27ter Fax Software, V.34 Fax Modem Software and T.38 Fax Relay Software. It also contains Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels. GAO Research's products are advanced and functional in many applications. Also, they are well accepted by users in Canada, Japan, Mexico as well as North America.

Embedded V.90 Modem Software for Data Transmission

Toronto, Canada - July 29th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its V.90 modem software implementing the V.90 ITU-T recommendation for modems that can connect at data rates of up to 56 kbps. This standard specifies a pair of high-speed modems, one digital and the other analog, which are designed for Internet use.

This V.90 modem software utilizes two modems: a digital modem with a maximum bit rate of 56 kbps for transmitting and 33.6 kbps for receiving; an analog modem with a maximum bit rate of 56 Kbps for receiving and 33.6 kbps for transmitting. It uses V.34 modulation in the upstream direction and PCM modulation in the downstream direction at the rate of 8000 symbols/s.

This software provides synchronous data signaling rates in the downstream direction from 28000 bps to 56000 bps in increments of 8/6 kbps. Adaptive techniques are used so that the modems can achieve the maximum data signaling rates that the channel can support. In addition, in order to establish the data signaling rate, use of V.8 procedure and exchange of rate sequences are both necessary and important.

This V.90 modem software belongs to GAO's family of Soft Modems. Other featured products in this line include V.21 Low Speed Modem Software which implements the ITU V.21 recommendation for speeds up to 300bps for use in the GSTN; V.32bis/V.32 Modem Software which is adapted for a variety of sampling rates such as 9600 Hz or 7200Hz and is designed to process data in 10ms intervals; and V.44 Data Compression Software.

T.38 Fax Relay Software Operates on a Variety of DSPs and Processors

Toronto, Canada - July 22th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its T.38 Fax Relay Software which is in compliance with the latest ITU-T recommendations. GAO Research's T.38 fax relay software is available for commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs under Windows and Linux.

The T.38 fax relay software is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter standards. It allows the transfer of fax documents in real-time between two facsimile terminals over the Internet or other networks using IP protocols. Its latest revision clarifies H.323, H.248.1, SIP and SDP call establishment and improves the compatibility between T.38 gateways and Group 3 fax.

This embedded software has been integrated and tested with hardware-based fax data modems providing operating data rates of up to 14.4 kbps. A "spoofing" function is implemented to prevent jitter, delay or lost packets. It provides support for both UDP and TCP and is optimized for fixed-point arithmetic.

This T.38 fax relay software belongs to GAO Research's family of Fax Software. Other featured products in this line include V.27ter Fax Software which is 4800bps and 2400bps modem and is used in the general switched telephone network; T.4 - TIFF conversion software which includes checking of RTC pattern, error correction on T.4 data, and can report the number of scan lines; and T.30/T.30E Fax Control Protocol Software for document facsimile transmission in the general switched telephone network.

V.44 Data Compression Software Features New String-Matching Algorithm

Toronto, Canada - July 15th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its V.44 data compression software based on the existing V.42bis standard. This V.44 data compression software is a lossless data compression procedure for use with V-series data circuit-terminating equipment (DCEs) as well as packet networks.

This V.44 data compression software consists of both an encoder and decoder. Encoding uses a dictionary consisting of a root-array with all characters, a node tree, and a history. Input is matched against previously input strings. If a string is matched, it is transferred as a codeword and an attempt is made to create a longer string in the dictionary. The decoder recreates the original string from the binary-tree dictionary.

This software uses a new string-matching algorithm for a higher degree of data compression, thus it increases upload and download speeds providing a particularly noticeable improvement over V.42bis. Depending on the data type, compression ratios of up to 6:1 are attainable with V.44. When V.44 is combined with GAO's V.92 soft modem, full advantage of both standards is realized by way of greater total throughput.

This V.44 data compression software belongs to GAO's family of Soft Modems. This line also includes V.34 Modem Software for full duplex data communication on the PSTN and on point-to-point 2 wire leased telephone type circuits at rates from 2400 to 33600bps; V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data; and V.92 modem software which supports increased upstream rates, quicker connect and Modem-On-Hold feature which allows the modem to work in conjuntion with call waiting.

V.42 Error Correction Protocol Features Cyclic Redundancy Check for Error Detection

Toronto, Canada - July 8th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its V.42 error correction protocol. GAO's V.42 error correction protocol is specially designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data.

This V.42 error correction protocol implemented the ITU-T V.42 standard which addresses two major problems for asynchronous devices: an asynchronous-to-synchronous conversion protocol and a sophisticated error-detection process for asynchronous systems. It provides link control protocol for the sequencing and flow control of the traffic and cyclic redundancy check for error detection.

This high performance software boasts synchronous transmission through the conversion of start-stop data. Its initial handshake in start-stop format minimizes disruption to the DTEs. This software also supports inter-working in the non-error-correcting mode with V-series DCEs that include asynchronous-to-synchronous conversion.

This V.42 error correction protocol belongs to GAO's family of Soft Modems. Other special products in this line include V.34 Modem Software which employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity, V.90 Modem Software which has a maximum upload speed of 36.6 kb/s and a maximum download speed of 56 kb/s and V.92 Modem Software which has the ability to temporarily put the "Modem-On-Hold" (MOH) which is particularly useful for lines that have call waiting, allowing users to receive a phone call without having to disconnect from their Internet session.

Embedded V.29 Fax Modem Software Provides Full-Duplex Data Transmission

Toronto, Canada - June 19th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its V.29 fax modem software which operates in either half or full duplex modes. This software implements the ITU-T V.29 Recommendation and provides full-duplex data transmission at rates of 9600, 7200, and 4800 bps over 4-wire leased lines.

GAO's V.29 fax modem software has a "quick connect" feature. It consists of both transmission and receiving functions for symbol transfer in groups of 2 or 4 bits at rates of 2400 symbols per second respectively. The fax modem software uses amplitude and phase modulation for synchronous transmission. It is also the modulation technique used in Group 3 fax (G3 fax) for fax data transfer at 9600 and 7200 bps on 2-wire lines. In addition, it is highly optimized in C and is multi-channel ready.

This high performance V.29 fax modem software belongs to GAO's family of Fax Software Products. Other featured products in this line include V.27ter Fax Software which implements the ITU-T V.27ter Recommendation and is used in the general switched telephone network, T.4 - TIFF Conversion Software which enables conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF) and V.34 Fax Modem Software which incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V series modems to make the best use of the available conditions. T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols are also included in this line.

G.728 LD-CELP Vocoder Boasts 2 ms Transcoding Delay

Toronto, Canada - June 14th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its G.728 LD-CELP vocoder which employs backward-adaptive linear predictive coding analysis to achieve a low transcoding delay. Applications for GAO G.728 include digital circuit multiplication equipment, video conferencing, digital telephony, and multimedia products.

GAO's G.728 vocoder implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth. The software encodes 5 sample frames of 16-bit linear PCM data into 10-bit code words. Using backward-adaptive linear predictive coding analysis, it is able to achieve a low trans-coding delay of 2 ms.

The ITU-T G.728 standard specifies the encoding of 8 kHz sampled speech signals for transmission over a 16 kbps channel. This recommendation contains the description of an algorithm for the coding of speech signals at 16 kbps using low-delay code excited linear prediction (LD-CELP). It also utilizes adaptive post filter which enhances performance for multiple transcodings.

This G.728 LD-CELP Vocoder belongs to GAO's family of Speech Vocoders. Other featured products in this line are GSM-AMR Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second, G.711 Vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard and G.729, G.729A and G.729AB Speech Vocoders which provide toll-quality speech with only moderate processing requirements and delay times and also perform well in the presence of random bit errors.

T.4-TIFF Conversion Software with RTC Pattern Check

Toronto, Canada - June 7th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its T.4-TIFF conversion software which enables conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF). It includes checking of RTC pattern, error correction on T.4 data and reports1 the number of scan lines.

GAO Research Inc.'s T.4 - TIFF conversion software supports conversion from T.4 to TIFF as well as from TIFF and T.4. TIFF is the industry standard for image file exchange. Every major desktop publishing and image processing software supports the TIFF format. It uses the CCITT Group 3 One-Dimensional modified Huffman RLE compression method.

This software supports most TIFF tags. Equipped with a tagged image format, new tags can be added at any time hence preventing the format from becoming obsolete and private tags can be defined to contain proprietary information within the TIFF file. It is fully compliant with ITU-T T.4 Recommendation and TIFF Specifications. The TIFF specification recommends 4 types of data compression schemes.

T.4 - TIFF conversion software belongs to GAO's family of Fax Software. Featured products in this line include T.4 Fax Modem Protocol which enables black and white documents and also optionally color documents to be transmitted on the general switched telephone network, international leased circuits and the Integrated Services Digital Network (ISDN); V.17 Fax Software which implements the ITU-T V.17 recommendation for a two-wire modem for facsimile applications with rates up to 14,400bps; and V.27ter Fax Software which can be used in the general switched telephone network.

G.723.1 Vocoder with Silence Compression Scheme and Voice Activity Detection

Toronto, Canada - May 17th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends this G.723.1 Vocoder ideal for applications such as video phones, audio/video conferencing and media gateways. GAO's G.723.1 dual rate speech CODEC performs compression and decompression of 8 kHz speech signals with a compression ratio of up to 12:1.

This G.723.1 vocoder includes a Silence Compression Scheme and Voice Activity Detection (VAD). It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for 5.3 kbps and 6.3 kbps channels respectively. G.723.1 software has switchable transmission rates over 5.3 or 6.3 kbps channels providing 4 kHz of quality speech bandwidth in conformance with the ITU-T standard. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU-T G.723.1 standard specifies a coded representation that can be used for compressing the speech or other audio signal components of multimedia services at a very low bit rate as part of the overall H.324 family of standards. It encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding. The excitation signal for the high rate coder is Multi-pulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP).

This G.711 Vocoder belongs to GAO's family of Speech Vocoders. Other featured products in this line include G.728 LD-CELP Vocoder which implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth and G.726 Vocoder which is used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

GSM-AMR (AMR-NB) Vocoder for Speech Compression

Toronto, Canada - May 13th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its GSM-AMR (AMR-NB) vocoder. It is mainly used for speech compression in the 3rd generation mobile telephony at 8000 samples/second.

This vocoder features optimized C or assembly code, low data and program memory requirements. GSM-AMR is a standard adapted by the 3rd Generation Partnership Project (3GPP). It is an Adaptive Multi Rate-Narrow Band (AMR-NB) speech codec. GAO's GSM-AMR codec has eight adaptive basic bit rates, 12.2, 10.2, 7.95, 7.40, 6.70, 5.90, 5.15 and 4.75 kbit/s. This codec works on the principle of Algebraic Code Excited Linear Prediction (ACELP) for all bit rates.

To reduce average bit rate, this codec supports the discontinuous transmission (DTX), using Voice Activity Detection (VAD) and Comfort Noise Generation (CNG) algorithms.

This GSM-AMR (AMR-NB) vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.726 Vocoder and G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products.GAO Research Inc. is a world-renowned provider of high quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors.

G.726 Speech Vocoder Complies with ITU-T G.721 and G.723 Standards

Toronto, Canada - May 6th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its G.726 vocoder which converts a 64 kbps A - law or ¦̀-law PCM channel to or from a 40, 32, 24 or 16 kbps channel. This speech vocoder can be used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

GAO Research's G.726 vocoder complies with the ITU-T standard and operates at 40, 32, 24, and 16 kbps. ITU-T G.726 is a superset of the ITU-T G.721 and G.723 standards and was originally designed as a half-rate alternative to G.711 audio companding. The conversion is applied to the PCM bit stream using an ADPCM transcoding technique thus the scheme has switchable transmission rates providing 4 kHz of audio bandwidth in conformance with the ITU-T standard.

This G.726 vocoder can encode 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀law encoded data into 2, 3, 4, or 5-bit code words. Since the algorithm encodes one sample at a time, the coding or decoding delay is effectively zero providing for robust, quality audio. In addition, processing frame size and input/output formats are user selectable.

This high performance G.726 Vocoder belongs to GAO's family of Speech Vocoders. Other featured products in this line are GSM-AMR Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second, G.711 Vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard and G.729, G.729A and G.729AB Speech Vocoders which provide toll-quality speech with only moderate processing requirements and delay times and also perform well in the presence of random bit errors.

G.167 Acoustic Echo Cancellation Software

Toronto, Canada - April 26th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its G.167 acoustic echo cancellation software fully compliant with ITU-T G.167 standard. The software is used to eliminate one of the biggest problems with hands-free speaker phones: acoustical echoes.

GAO's G.167 Acoustic Echo Cancellation Software features robust double-talk detection, user-callable functions, high signal to noise ratio and automatic gain control. It provides high performance full duplex operation and its reliable design delivers consistent results. The memory and MIPS requirements of an acoustical echo canceller depend on the maximum duration of all possible echoes. The longer the duration of an echo the more MIPS and memory required to resolve the problem. Echo with duration of 80 ms may be generated by a room with 4 meters by 4 meters of hard wall. This software is implemented in assembly or C.

This acoustic echo cancellation software belongs to GAO's family of Telephony Software. This line provides a complete package for telephony that includes speech compression modules and telephony modules. Featured products in this line include Call Progress Software which is a tonal signaling standard that is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls, Dual Tone Multi-Frequency Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone and Automatic Gain Control Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases.

Dual Tone Multi-Frequency Software

Toronto, Canada - April 20th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends this dual tone multi-frequency (DTMF) software which is an international signalling standard for touch-tone telephones. This embedded software is able to operate on a variety of DSPs and processors. The DTMF software is specially designed for interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

GAO's Dual Tone Multi-Frequency (DTMF) Software is an implementation of a Dual-Tone Multi-Frequency (DTMF) generator and decoder. It features user-callable functions, low data and program memory requirements. It generates standard telephone digits as the sum of sinusoids corresponding to a frequency table for each digit. The DTMF decoder will take a digital signal as input and produce the decoded digit. In addition, it is fully compliant to EIA/TIA - 464B 6.1.4 and 6.1.5.1 to 6.1.5.5.

This high performance DTMF generator and decoder belongs to GAO's family of Telephony Software. This telephony software package can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP. Other reliable products in this line include Automatic Gain Control Software for speech processing applications; Call Progress Software which can be used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls; and MF R1/R2 Software for multi-frequency signal receiving equipment.

T.30 Fax Control Protocol Software

Toronto, Canada - April 15th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its T.30 fax control protocol software which is targeted for fax applications such as fax handshaking protocol. GAO T.30 software implements ITU-T T.30 Recommendation, which is procedure for document facsimile transmission in the general switched telephone network.

GAO T.30 software establishes and manages communications between two fax modems. It has five phases of operation: call setup, pre-message procedure (selecting the communication mode), message transmission (including phasing and synchronization), post message procedure and call release.

GAO T.30E software implements the procedure for the Group 3 (G3 fax) document facsimile transmission of continuous-tone color images. It also enables the efficient transmission of high quality, full color and gray-scale images over the general switched telephone network and other networks.

The high performance T.30 fax control protocol software belongs to GAO's family of Fax Software. This line also has other featured products such as V.17 Fax Modem software which operates within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic and T.38 Fax Relay Software which is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards. This line also includes Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels.

G.168 Digital Network Echo Canceller

Toronto, Canada - April 7th, 2013 - GAO Research Inc.(www.GAOResearch.com) provides a software solution implementing G.168 digital network echo canceller which is intended for use in the 4-wire portion of a circuit. This software module can be used to reduce echo by digitally subtracting an estimated echo from the circuit echo.

GAO's G.168 echo cancellation software features double-talk detection which avoids divergence during double talk. It also reduces returned echo level during single talk. Compliant with the ITU G.168 recommendation, this software supports proper operation during facsimile and low speed (9.6 Kbit/s) voice-band data transmissions. This software module has user-callable functions and is implemented in assembly or C. It provides multiple configurable echo tail length options including 8, 16, 32, 64 and 128 ms.

This G.168 digital network echo canceller software module belongs to GAO's family of VoIP Software. GAO offers a complete VoIP packaged solution, which includes modules for fax and data over IP. The typical components of an IP Telephony System are User Interface, Voice Processing, Network Protocols, Network Management, and System Services. Other featured products in this line include Automatic Gain Control Software which controls the dynamic range of a speech signal without amplifying the noise between words and phrases; T.38 Fax Relay Software which allows the transfer of facsimile documents in real-time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols; and Dual Tone Multi-Frequency Software widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

G.711 µ-law and A-law Vocoder

Toronto, Canada - March 28th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its G.711 vocoder implementing independent user-callable functions that perform all of the ¦̀-law and A-law encoding and decoding operations. The most common application for GAO's G.711 Vocoder is data compression over telephone networks.

G.711 vocoder provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard. It uses pulse code modulation (PCM) to compress, decompress, encode, and decode analog speech, which can then be transmitted and received as binary data.

This vocoder operates at a 64 kbps bit stream. It specifies two forms of companding standards: the µ-law and the A-law. The A-Law G.711 PCM encoder converts 13 bit linear PCM samples into 8 bit compressed PCM (logarithmic form) samples, and the decoder reverses the process. The µ-Law G.711 PCM encoder converts 14 bit linear PCM samples into 8 bit compressed PCM samples.

This G.711 vocoder belongs to GAO's family of Speech Vocoders. Other featured products in this line include G.729, G.729A and G.729AB Speech Vocoder which is based on Code Excited Linear Prediction Model (CELP) and Conjugate-Structure Algebraic CELP (CS-ACELP) and is suitable for visual telephony, wireless communications, and digital satellite communication systems; G.723.1 Vocoder which encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for the 5.3 Kbps and 6.3 Kbps channels respectively; and G.722 Vocoder utilizing a SB-ADPCM decoder which performs the reverse operation to the encoder.

V.92 Modem Software Provides Duplex Mode of Operation on the PSTN

Toronto, Canada - March 19th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its V.92 modem software which supports modem-on-hold procedures in response to call-waiting events or out-going call requests. By employing pulse code modulation in the upstream direction, V.92 modem software supplies a data rate of up to 48 kbps which is a significant improvement over V.90's upstream speed of 33.6 kbps.

This V.92 modem software has the ability to temporarily put the "Modem-On-Hold" (MOH), which is particularly useful for lines that have call waiting, allowing users to receive a phone call without having to disconnect from their Internet session. The V.92 Server Modem is digital modem with a maximum bit rate of 56 kbps transmit and 48 kbps receive. The V.92 Client Modem is analog modem with a maximum bit rate of 56 kbps receive and 48 kbps transmit.

This modem uses adaptive techniques that enable it to achieve the maximum data signaling rates which the channel can support on each connection. It can also negotiate V.34 modulation upstream (downstream) if a connection will not support PCM modulation. Modem connection time is reduced through faster handshaking. Connection time for V.92 is up to 50% quicker than V.90 for buffered connections.

This V.92 modem software belongs to GAO's family of Soft Modems. Other featured products in this line are V.44 Data Compression Software which consists of both an encoder and decoder; V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data; and V.42bis Data Compression Software which enhances the performance of error correcting modems by making better use of an often over-crowded communications channel.

Voice Activity Detector, Comfort Noise Generator Software Allowing Discontinuous Transmission

Toronto, Canada - March 14th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its Voice Activity Detector (VAD), Comfort Noise Generator (CNG) software used to reduce the transmission rate during silent periods of voice transmission. This software is based on a Voice Activity Detection (VAD) algorithm and a Comfort Noise Generator (CNG) algorithm that allows the insertion of an artificial noise during silent intervals. This software is able to operate on a variety of DSPs and processors.

This Voice Activity Detector (VAD), Comfort Noise Generator (CNG) software allows discontinuous transmission which is necessary to avoid noise modulation introduced when the transmission is switched off. If the background acoustic noise presented during active periods abruptly disappears, the noise modulation may reduce the intelligibility of speech. It is implemented in assembly or C.

This software features user-callable functions and is able to work with all GAO's speech vocoders. The purpose of the VAD is to reliably detect the presence or absence of speech and to convey this information to the CNG algorithm. The purpose of the CNG algorithm is to create a noise that matches the actual background noise with a global transmission cost as low as possible.

This Voice Activity Detector (VAD), Comfort Noise Generator (CNG) software belongs to GAO's family of Telephony Software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for Feature phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP. Other popular software in this line include Caller Identification Software suitable for analog or digital telephone, video conferencing, and answering machines, Acoustic Echo Cancellation G.167 Software which eliminates one of the biggest problems with hands-free speaker phones: acoustical echoes, as well as MF R1/R2 Software which is an implementation of ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment.

V.32bis/V.32 Modem Software

Toronto, Canada - March 7th, 2013 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its V.32bis/V.32 modem software which can be adapted for sampling rates of 9600 Hz or 7200Hz. The V.32bis/V.32 modem is designed to process data in 10 ms intervals.

The V.32bis/V.32 modem software provides full duplex mode of operation on switched and 2 wire, point-to-point, and leased circuits. The transmit and receive functions are called within a single function called V32_isr which is called to process received samples and to generate samples to transmit. The V32_init function is called to initialize the V.32/32bis modem. It also initializes the structure which contains all the memory required for the modem.

This modem software utilizes echo cancellation techniques for channel separation. For V.32, two alternative modulation techniques are used for a signaling rate of 9600 bps: one uses 16 carrier states and one uses trellis coding with 32 carrier states. This modem software provides multiple data signaling rates including 14400, 12000, 9600, 7200, and 4800 bps synchronous. Exchange of rate sequences is provided during start-up to establish the data rate, coding, and any other special facilities.

This V.32bis/V.32 modem software belongs to GAO's family of Soft Modems. Products in this line include V.92 modem software which provides increased upstream rates, quicker connect and Modem-On-Hold feature which allows the modem to work in conjuntion with call waiting, and V.34 Modem Software which employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity, and V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data.

Adaptive Noise Suppression Algorithm

Toronto, Canada - February 28th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its adaptive noise suppression algorithm designed to adaptively suppress both stationary and non-stationary background noise from speech. By taking advantage of the signal characteristics of human speech, the algorithm extracts the signals of interest and adaptively cancels the noise that is present in the background.

Featuring real-time audio processing and C-callable functions, it provides natural sounding and undistorted speech output. Noises embedded in speech are especially perceivable when compressed and transmitted. Non-stationary background noises that change over time are even more perceivable when played back.

By continuously tracking the characteristics of the noise signal, GAO's adaptive algorithm effectively eliminates this background noise, resulting in much clearer speech over the communication channel. The code is developed using ANSI C and can be ported to customers' platform of choice.

This adaptive noise suppression algorithm belongs to GAO's family of Telephony Software. This line also has other popular and widely used products including MF R1/R2 Software which is an implementation of ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment, Call Progress Software used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls and Caller Identification Software which is based on the Bell 202 or the V.23 standard and can be used in analog or digital telephone, video conferencing, and answering machines.

V.27ter Fax Modem Software

Toronto, Canada - February 25th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its V.27ter fax modem software used in the general switched telephone network. This fax modem software can also be integrated with telephony, speech compression, and fax relay solutions for use in various applications in communications and telecom.

This V.27ter fax modem software implements the ITU-T V.27ter fax recommendation which incorporates a modem operating at either 4800 bps or 2400 bps. It operates at a reduced rate of 2400 bps with four phase differentially encoded modulation and uses a data signaling rate of 4800 bps with eight phase differentially encoded modulation. It is the modulation scheme used in Group 3 facsimile (G3 fax) for image transfer at 4800 bps and 2400 bps.

This fax modem software consists of transmitting functions and receiving functions which are called to transmit/receive bits in groups of 2 or 3 (referred to as symbols) at a rate of 1200 or 1600 symbols per second respectively. It also features optional backward channel at modulation rates of up to 75 symbols per second. In addition, it is highly optimized in C and is multi-channel ready.

This V.27ter fax modem software belongs to GAO's family of Fax Software. This line also includes V.17 Fax Software implementing the ITU-T V.17 recommendation for a two-wire modem for facsimile applications with rates up to 14,400 bps, V.29 Fax Software implementing the ITU-T V.29 Recommendation which provides full-duplex data transmission at rates of 9600, 7200, and 4800 bps over 4-wire leased lines and V.34 Fax Modem Software that incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V.series modems to make the best use of the available conditions.

T.38 Fax Relay Software Features UDP and TCP Support

Toronto, Canada - February 17th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its T.38 Fax Relay Software in compliance with the latest ITU-T recommendations. This embedded software is able to operate on a variety of DSPs and processors and is optimized for fixed-point arithmetic.

The T.38 fax relay software allows the transfer of fax documents in real-time between two facsimile terminals over the Internet or other networks using IP protocols. Its latest revision clarifies H.323, H.248.1, SIP and SDP call establishment and improves the compatibility between T.38 gateways and Group 3 fax.

GAO's T.38 fax relay software is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter standards. It is available for commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs under Windows and Linux. It has been integrated and tested with hardware-based fax data modems providing operating data rates of up to 14.4 kbps. A "spoofing" function is implemented to prevent jitter, delay or lost packets. In addition, this software provides support for both UDP and TCP.

This T.38 fax relay software belongs to GAO's family of Fax Software. This line also includes other featured software such as V.17 Fax Software implementing the ITU-T V.17 recommendation for a two-wire modem for facsimile applications with rates up to 14,400bps, V.29 Fax Software which consists of transmitting functions and receiving functions which are called to transmit/receive bits in groups of 2 or 3 (referred to as symbols) at rates of 1200 or 1600 symbols per second respectively and V.34 Fax Modem Software which is available for Super Group 3 (Super G3) fax application. GAO Group 3 Fax software is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels.

V.34 Fax Modem Software for Super Group 3 (Super G3) Fax Application

Toronto, Canada - January 29th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its V.34 Fax Modem Software which implements the ITU-T V.34 standard for dial up modems of up to 33,600 bps. The V.34 faxmodem software provides adaptive signalling through line probing by adjusting to channel quality and capacity and allows a half-duplex mode of operation for fax applications. This embedded software is able to operate on a variety of DSPs and processors.

This V.34 fax modem software features trellis coding and shell mapping which gives the modem a robust design even in the case of heavily impaired channels. It incorporates a higher level of optional capabilities and adaptability than the lower V.series modems to make the best use of the available conditions. It provides data signaling rates from 2400 to 33600 bps. It operates on 2-wire, point-to-point circuits and dial up or leased circuits. It also utilizes QAM on each channel and operates in synchronous mode.

One of the most significant characteristics of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel. Unlike lower speed modem standards where nominal bandwidth was set using a fixed carrier frequency, both the bandwidth and carrier frequencies are adaptive in V.34. GAO has V.34 fax modem software (fax data pump) available for Super Group 3 (Super G3) fax applications.

The high performance V.34 fax modem software belongs to GAO's family of Fax Software. This line also has other featured products such as V.17 Fax Modem software which operates within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic and T.38 Fax Relay Software which is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards. This line also includes Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels.

V.17 Fax Software Provides Synchronous Line Transmission

Toronto, Canada - January 18th, 2013 - GAO Research Inc.(www.GAOResearch.com) recommends its V.17 Fax Modem software implementing the ITU-T V.17 recommendation for two-wire modem for facsimile applications with data rates up to 14,400bps. This embedded software is able to operate on a variety of DSPs and processors. This V.17 fax modem solution is capable of operation within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic.

The V.17 fax software features half-duplex mode of operation supporting V.24 interchange circuits. Its frequency carrier operates at 1800 Hz with V.2 transmitted power level. It provides exchange of rate sequences during start-up to establish the data-rate, coding, and any other special facilities. QAM is used as the modulation scheme providing synchronous line transmission at 2400 baud. Its trellis coding rates are from 7200 to 14000 bps. This embedded fax software is compatible with commonly used processors such as TI C5000 and C6000 series DSPs, ARM processors and ADI DSPs and operates under such operating systems as Windows, VxWorks, and Linux.

The high performance V.17 fax software belongs to GAO's family of Fax Software. This line includes similar products such as V.34 Fax Modem Software which is the standard for dial up modems of up to 33,600bps, V.27ter Fax Software which implements the ITU-T V.27ter Recommendation used in the general switched telephone network, and T.38 Fax Relay Software which is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards. This line also includes Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels. GAO's products are advanced and functional in many applications. Also, they are well accepted by users in Canada, Japan, Mexico as well as North America.

Caller ID Software Based on the Bell 202 or the V.23 Standard

Toronto, Canada - January 8th, 2013 - GAO Research Inc.(www.GAOResearch.com) is offering its caller identification software based on the Bell 202 or the V.23 standard. This high performance caller ID software is well suited for analog or digital telephones, video conferencing and answering machines.

This Caller Identification (ID) Software features highly optimized assembly or C implementations, low data and program memory requirements and complete caller ID information including name, number, time and date. It consists of two user-callable functions that perform the initialization and identification operations.

This caller ID software is compatible for virtually any international market and under different line length conditions and even poor line conditions. It also performs non-volatile storage of test programs/scripts and results and has the ability to perform Caller ID on Call Waiting (Type II) test and simulation.

This Caller Identification (ID) Software belongs to GAO's family of Telephony Software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. This line includes a wide variety of telephony modules such as Automatic Gain Control Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases, Call Progress (CP) Software which is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls, and Dual Tone Multi-Frequency Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

V.42 Error Correction Protocol for Synchronous Transmission

Toronto, Canada - December 31st, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.42 error correction protocol. GAO's V.42 error correction protocol is specially designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data.

This V.42 error correction protocol implemented the ITU-T V.42 standard which addresses two major problems for asynchronous devices: an asynchronous-to-synchronous conversion protocol and a sophisticated error-detection process for asynchronous systems. It provides link control protocol for the sequencing and flow control of the traffic and cyclic redundancy check for error detection.

This high performance software boasts synchronous transmission through the conversion of start-stop data. Its initial handshake in start-stop format minimizes disruption to the DTEs. This software also supports inter-working in the non-error-correcting mode with V-series DCEs that include asynchronous-to-synchronous conversion.

This V.42 error correction protocol belongs to GAO's family of Soft Modems. Other special products in this line include V.34 Modem Software which employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity, V.90 Modem Software which has a maximum upload speed of 36.6 kb/s and a maximum download speed of 56 kb/s and V.92 Modem Software which has the ability to temporarily put the "Modem-On-Hold" (MOH) which is particularly useful for lines that have call waiting, allowing users to receive a phone call without having to disconnect from their Internet session.

Embedded V.29 Fax Modem Software Operates in Either Half or Full Duplex Modes

Toronto, Canada - December 31st, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.29 fax modem software which implements the ITU-T V.29 Recommendation and provides full-duplex data transmission at rates of 9600, 7200, and 4800 bps over 4-wire leased lines.

GAO's V.29 fax modem software has a "quick connect" feature. It operates in either half or full duplex modes. It consists of both transmission and receiving functions for symbol transfer in groups of 2 or 4 bits at rates of 2400 symbols per second respectively. The fax modem software uses amplitude and phase modulation for synchronous transmission. It is also the modulation technique used in Group 3 fax (G3 fax) for fax data transfer at 9600 and 7200 bps on 2-wire lines. In addition, it is highly optimized in C and multi-channel ready.

This high performance V.29 fax modem software belongs to GAO's family of Fax Software Products. GAO's family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

This line also has other featured products including V.27ter Fax Software which implements the ITU-T V.27ter Recommendation and is used in the general switched telephone network, T.4 - TIFF Conversion Software which enables conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF) and V.34 Fax Modem Software which incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V series modems to make the best use of the available conditions. T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols are also included in this line.

Embedded V.90 Modem Software

Toronto, Canada - December 12th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.90 modem software. GAO V.90 software module implements the V.90 ITU-T recommendation for modems that can connect at data rates of up to 56 kbps. This standard specifies a pair of high-speed modems, one digital and the other analog, which are designed for Internet use. Most ISPs are digitally connected both to the Internet and to the telephone company's central office (CO).

This V.90 modem software utilizes two modems: a digital modem with a maximum bit rate of 56 kbps for transmitting and 33.6 kbps for receiving; an analog modem with a maximum bit rate of 56 Kbps for receiving and 33.6 kbps for transmitting. It uses V.34 modulation in the upstream direction and PCM modulation in the downstream direction at the rate of 8000 symbols/s.

This software provides synchronous data signaling rates in the downstream direction from 28000 bps to 56000 bps in increments of 8/6 kbps. Adaptive techniques are used so that the modems can achieve the maximum data signaling rates that the channel can support. In addition, in order to establish the data signaling rate, use of V.8 procedure and exchange of rate sequences are both necessary and important.

This V.90 modem software belongs to GAO's family of Soft Modems. This line also includes similar products such as V.92 Modem Software which supports modem-on-hold procedures in response to call-waiting events or out-going call requests, V.34 Modem Software which employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity and V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data.

G.728 LD-CELP Vocoder Boasts 2 ms Transcoding Delay

Toronto, Canada - December 4th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.728 LD-CELP vocoder which employs backward-adaptive linear predictive coding analysis to achieve a low transcoding delay. Applications for GAO G.728 include digital circuit multiplication equipment, video conferencing, digital telephony, and multimedia products.

GAO's G.728 vocoder implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth. The software encodes 5 sample frames of 16-bit linear PCM data into 10-bit code words. Using backward-adaptive linear predictive coding analysis, it is able to achieve a low trans-coding delay of 2 ms.

The ITU-T G.728 standard specifies the encoding of 8 kHz sampled speech signals for transmission over a 16 kbps channel. This recommendation contains the description of an algorithm for the coding of speech signals at 16 kbps using low-delay code excited linear prediction (LD-CELP). It also utilizes adaptive post filter which enhances performance for multiple transcodings.

This G.728 LD-CELP Vocoder belongs to GAO's family of Speech Vocoders. Other featured products in this line are GSM-AMR Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second, G.711 Vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard and G.729, G.729A and G.729AB Speech Vocoders which provide toll-quality speech with only moderate processing requirements and delay times and also perform well in the presence of random bit errors.

G.726 Speech Vocoder Utilizes ADPCM Transcoding Technique

Toronto, Canada - November 27th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.726 vocoder which converts a 64 kbps A - law or ¦̀-law PCM channel to or from a 40, 32, 24 or 16 kbps channel. This speech vocoder can be used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

GAO Research's G.726 vocoder complies with the ITU-T standard and operates at 40, 32, 24, and 16 kbps. ITU-T G.726 is a superset of the ITU-T G.721 and G.723 standards and was originally designed as a half-rate alternative to G.711 audio companding. The conversion is applied to the PCM bit stream using an ADPCM transcoding techniquethus the scheme has switchable transmission rates providing 4 kHz of audio bandwidth in conformance with the ITU-T standard.

This G.726 vocoder can encode 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀law encoded data into 2, 3, 4, or 5-bit code words. Since the algorithm encodes one sample at a time, the coding or decoding delay is effectively zero providing for robust, quality audio. In addition, processing frame size and input/output formats are user selectable.

This high performance G.726 Vocoder belongs to GAO's family of Speech Vocoders. Other featured products in this line are GSM-AMR Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second, G.711 Vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard and G.729, G.729A and G.729AB Speech Vocoders which provide toll-quality speech with only moderate processing requirements and delay times and also perform well in the presence of random bit errors.

G.165 Line Echo Canceller Offers User-Callable Functions

Toronto, Canada - November 22nd, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.165 line echo canceller software which cancels line echoes caused by 2 to 4 wire conversion hybrids in telephone lines. The line echo canceller is designed for integration with other software modules from GAO such as our DTMF Encoder/Decoder to enhance performance.

This G.165 line echo cancellation software features double-talk detection which avoids divergence during double talk. It can also be employed in addition to echo suppressors for long delays. GAO's line echo canceller consists of two user-callable functions that perform echo cancellation and initialization operations. It is compliant with the ITU G.165 recommendation and is ideal for full-duplex operation.

This G.165 line echo canceller belongs to GAO's family of Telephony Software. This line also includes Caller Identification Software which is a highly optimized implementation of the caller identification function, Call Progress Software which provides full call progress tone detection and generation functionality and operates on PCM samples and Dual Tone Multi-Frequency Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for Feature phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP. GAO's family has provided a lot of featured products with good quality, competitive price and good service and is well accepted by customers all over the world such as Canada, United States, UK, Australia and Italy.

V.44 Data Compression Software

Toronto, Canada - November 15th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering this V.44 data compression software which implements all the mandatory features of the V.44 ITU-T international standard. This V.44 data compression software is a lossless data compression procedure for use with V-series data circuit-terminating equipment (DCEs) as well as packet networks.

This V.44 data compression software is an improvement based on the existing V.42bis standard. It uses a new string-matching algorithm for a higher degree of data compression, thus it increases upload and download speeds providing a particularly noticeable improvement over V.42. Depending on the data type, compression ratios of up to 6:1 are attainable with V.44.

This V.44 data compression software consists of both an encoder and decoder. Encoding uses a dictionary consisting of a root-array with all characters, a node tree, and a history. Input is matched against previously input strings. If a string is matched, it is transferred as a codeword and an attempt is made to create a longer string in the dictionary. The decoder recreates the original string from the binary-tree dictionary.

This V.44 data compression software belongs to GAO's family of Soft Modems. Products in this line include V.92 modem software which supports increased upstream rates, quicker connect and Modem-On-Hold feature which allows the modem to work in conjuntion with call waiting, V.34 Modem Software which employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity and V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data.

Call Progress Software for Telephone Network Systems

Toronto, Canada - November 7th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its call progress software available for a number of DSPs and microprocessors. This software provides full call progress tone detection and generation functionality and operates on PCM samples.

Call progress is a tonal signaling standard that is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls. It features low data and program memory requirements and can be easily configured to different cadences and tones.

The software module allows for such signals as Dial Tone, Busy Tone, Congestion Signal, Ring Back and Off Hook. It consists of two user-callable functions that perform the detection, generation, and initialization operations. In addition, GAO's Call Progress (CP) software is implemented in assembly and C.

This Call Progress (CP) software belongs to GAO's family of Telephony Software. This line also contains Automatic Gain Control (AGC) Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases, Multi-Frequency R1/R2 Software which is an implementation of ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment and Acoustic Echo Cancellation Software which is an acoustic echo canceller that eliminates one of the biggest problems with hands-free speaker phones: acoustical echoes. This software packages can be used for Feature Phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP.

T.38 Fax Relay Software Prevents Jitter, Delay or Lost Packets

Toronto, Canada - October 30th, 2012 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its T.38 fax relay software which is compliant with the latest ITU-T recommendations. This software is also fully compliant with the ITU-T T.38 fax relay specification and is available for commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs under Windows and Linux.

The T.38 fax relay software solution operates within a multi-tasking environment and is optimized for fixed-point arithmetic. It allows the transfer of fax documents in real-time between two facsimile terminals over the Internet or other networks using IP protocols. Its latest revision clarifies H.323, H.248.1, SIP and SDP call establishment and improves the compatibility between T.38 gateways and Group 3 fax.

GAO's T.38 fax relay software is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards. It has been integrated and tested with hardware-based fax data modems providing operating data rates of up to 14.4 kbps. A "spoofing" function is implemented to prevent jitter, delay or lost packets. In addition, this software provides support for both UDP and TCP.

The T.38 fax relay software belongs to GAO's family of Fax Software. This line also has similar products such as V.34 Fax Modem Software which is the standard for dial up modems of up to 33,600bps, V.27ter Fax Software which implements the ITU-T V.27ter Recommendation used in the general switched telephone network, and V.17 Fax Modem software which implements the ITU-T V.17 recommendation for a two-wire modem for facsimile applications with data rates up to 14,400bps. This line also includes Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels.

MF R1/R2 Software Features Low Data and Program Memory Requirements

Toronto, Canada - October 25th, 2012 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its MF R1/R2 software which is an implementation of ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment. It is designed with highly optimized assembly or C implementation.

This MF R1/R2 software features low data and program memory requirements. Signaling systems R1 and R2 are used for inter-register signaling. The R1 signaling system is specified by the ITU-T as the North American standard and the R2 signaling system used in Europe. Both signaling systems R1 and R2 consist of two parts: Line signaling and Register signaling. Line signaling is used to handle line and supervisory signals. Register signaling is used for address signals.

R1 and R2 line signaling operates in a digital transmission environment and operations are handled by signaling bits. R1 Register signaling handles address signals using MF in-band pulse signaling at frequencies of 700Hz to 1700Hz, at 200Hz increments. The combination of two of these frequencies determines the signal. R2 Register signaling handles address signals also by sending a combination of two fundamental frequencies. The R2 system uses two different sets of six frequencies to combine for the forward and backward signals.

This MF R1/R2 software belongs to GAO¡¯s family of Telephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software which provides full call progress tone detection and generation functionality and operates on PCM samples, Acoustic Echo Cancellation Software (AEC) and Dual Tone Multi-Frequency Software which is commonly used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

T.4-TIFF Conversion Software Supports Error Correction on T.4 Data

Toronto, Canada - October 25th, 2012 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its T.4-TIFF conversion software which conducts checking of RTC pattern, error correction on T.4 data and reports the number of scan lines. This T.4 - TIFF conversion software enables conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF).

This software supports conversion from T.4 to TIFF as well as from TIFF and T.4. TIFF was designed from ground up to become the industry standard for image file exchange. Every major desktop publishing and image processing software supports the TIFF format. Equipped with a tagged image format, new tags can be added at any time hence preventing the format from becoming obsolete and private tags can be defined to contain proprietary information within the TIFF file.

GAO's T.4 - TIFF conversion software supports most tags. It is fully compliant with ITU-T T.4 Recommendation and TIFF Specifications. The TIFF specification recommends 4 types of data compression schemes. In addition, GAO's T.4 - TIFF conversion software supports the CCITT Group 3 One-Dimensional modified Huffman RLE compression method.

GAO's T.4 - TIFF conversion software belongs to GAO's family of Fax Software. Other products in this line includes V.21 Channel 2 Fax Software which provides a 300 bits per second duplex modem standard for use in the general switched telephone network, T.30/T.30E Fax Control Protocol Software which enables the efficient transmission of high quality, full color and gray-scale images over the general switched telephone network and other networks, T.38 Fax Relay Software which allows the transfer of facsimile documents in real-time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols.

G.723.1 Vocoder for Video Phones, Audio/Video Conferencing and Media Gateways

Toronto, Canada - October 15th, 2012 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its G.723.1 Vocoder which is ideal for applications such as video phones, audio/video conferencing and media gateways. This G.723.1 vocoder includes Silence Compression Scheme and Voice Activity Detection (VAD).

GAO's G.723.1 dual rate speech coder performs compression and decompression of 8 kHz speech signals with a compression ratio of up to 12:1. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for 5.3 kbps and 6.3 kbps channels respectively. G.723.1 software has switchable transmission rates over 5.3 or 6.3 kbps channels providing 4 kHz of quality speech bandwidth in conformance with the ITU-T standard. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU-T G.723.1 standard specifies a coded representation that can be used for compressing the speech or other audio signal components of multimedia services at a very low bit rate as part of the overall H.324 family of standards. It encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding. The excitation signal for the high rate coder is Multi-pulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP).

This G.711 Vocoder Belongs to GAO's family of Speech Vocoders. This line of vocoders complies with the ITU-T Vocoder standards for speech processing software and audio processing codecs. This line also includes G.722 Vocoder which Complies with the ITU-T H.320 standard for video conferencing, G.711 vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz and G.728 LD-CELP Vocoder which implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth.

V.92 Modem Software Features Fast Connection Speed

Toronto, Canada - September 26th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.92 Modem Software which supports modem-on-hold procedures in response to call-waiting events or out-going call requests. V.92 has the ability to temporarily put the "Modem-On-Hold" (MOH) which is particularly useful for lines that have call waiting, allowing users to receive a phone call without having to disconnect from their Internet session.

By employing pulse code modulation in the upstream direction, V.92 supplies a data rate of up to 48 kbps which is a significant improvement over V.90's upstream speed of 33.6 kbps. This increase is made possible because the V.92 clock is set by the demodulation process and used in the upstream modulation. This will prove most useful in applications that involve large data transfers from user to ISP: VoIP, for example. The V.92 server modem is a digital modem with a maximum bit rate of 56 kbps transmit and 48 kbps receive.

This modem boasts adaptive techniques that enable it to achieve close to the maximum data signaling rates which the channel can support on each connection. It can also negotiate V.34 modulation upstream (downstream) if a connection will not support PCM modulation upstream (downstream). Modem connection time is reduced through faster handshaking. Connection time for V.92 is up to 50% quicker than V.90 for buffered connections.

This V.92 modem software belongs to GAO's family of Soft Modems. This line also includes similar products such as V.90 Modem Software which has a maximum upload speed of 36.6 kb/s and a maximum download speed of 56 kb/s, V.34 Modem Software which employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity and V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data.

V.34 Fax Modem Software Supports Half-Duplex Operating Mode

Toronto, Canada - September 21st, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.34 Fax Modem Software which implements the ITU-T V.34 standard for dial up modems of up to 33,600bps.The standard allows a half-duplex mode of operation for fax applications. TheV.34 faxmodem software provides adaptive signalling through line probing by adjusting to channel quality and capacity.

This V.34 fax modem software features trellis coding and shell mapping which gives the modem a robust design even in the case of heavily impaired channels. It incorporates a higher level of optional capabilities and adaptability than the lower V.series modems to make the best use of the available conditions. One of the most significant characteristics of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel.

Unlike lower speed modem standards where nominal bandwidth was set using a fixed carrier frequency, both the bandwidth and carrier frequencies are adaptive in V.34. GAO has V.34 fax modem software (fax data pump) available for Super Group 3 (Super G3) fax applications. The V.34 fax modem provides data signaling rates from 2400 to 33600 bps. It operates on 2-wire, point-to-point circuits and dial up or leased circuits. It also utilizes QAM on each channel and operates in synchronous mode.

The high performance V.34 fax modem software belongs to GAO's family of Fax Software. This line also has similar products such as V.17 Fax Modem software which operates within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic, V.27ter Fax Software which implements the ITU-T V.27ter Recommendation used in the general switched telephone network, and T.38 Fax Relay Software which is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards. This line also includes Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels.

Voice Activity Detector (VAD), Comfort Noise Generator (CNG) Software

Toronto, Canada - September 12th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its Voice Activity Detector (VAD), Comfort Noise Generator (CNG) software which is used to reduce the transmission rate during silent periods of voice transmission. Allowing discontinuous transmission, this system is based on a Voice Activity Detection (VAD) algorithm and a Comfort Noise Generator (CNG) algorithm that allows the insertion of an artificial noise during silent intervals.

This feature is necessary to avoid noise modulation introduced when the transmission is switched off. If the background acoustic noise presented during active periods abruptly disappears, the noise modulation may reduce the intelligibility of the speech. This software is implemented in assembly or C. It features user-callable functions and is able to work with all speech vocoders. The purpose of the VAD is to reliably detect the presence or absence of speech and to convey this information to the CNG algorithm. The purpose of the CNG algorithm is to create a noise that matches the actual background noise with a global transmission cost as low as possible.

This Voice Activity Detector (VAD), Comfort Noise Generator (CNG) belongs to GAO's family of Voice over IP software. GAO offers systems designers and engineers a complete VoIP packaged solution, which includes modules for fax and data over IP. Other products in the line include Digital Network Echo Canceller (ITU-T G.168) which is used for reducing the echo by digitally subtracting an estimated echo from the circuit echo, Dual Tone Multi-Frequency (DTMF) Software which has a variety of uses in telephone systems.and Automatic Gain Control (AGC) Software which is designed for speech processing applications. GAO VoIP software halves the transmission bandwidth by recognizing the periods when a party is silent and ceasing transmission during those periods.

Dual Tone Multi-Frequency (DTMF) Software Provides User-callable Functions

Toronto, Canada - September 10th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its dual tone multi-frequency (DTMF) software for telephone systems. DTMF is an international signalling standard for touch-tone telephones. It is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

GAO's Dual Tone Multi-Frequency (DTMF) Software is an implementation of a Dual-Tone Multi-Frequency (DTMF) generator and decoder. It generates standard telephone digits as the sum of sinusoids corresponding to a frequency table for each digit. The DTMF decoder will take a digital signal as input and produce the decoded digit. GAO's DTMF software generates and decodes 8 kHz PCM samples.

GAO's DTMF generator and decoder feature user-callable functions, low data and program memory requirements. It consists of four user-callable functions that perform the generating, decoding, and initialization operations. GAO's Dual Tone Multi-Frequency (DTMF) Software is implemented in assembly and C and is fully compliant to EIA/TIA - 464B 6.1.4 and 6.1.5.1 to 6.1.5.5.

This dual tone multi-frequency (DTMF) software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software which provides full call progress tone detection and generation functionality and operates on PCM samples, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

V.27ter Fax Modem Software Highly Optimized in C

Toronto, Canada - September 3rd, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.27ter fax modem software which is used in the general switched telephone network. This fax modem software can also be integrated with other data modems, telephony, speech compression, and fax relay solutions for use in various applications such as communications and telecom.

This V.27ter fax modem software implements the ITU-T V.27ter fax recommendation which incorporates a modem operating at either 4800 bps or 2400 bps. It operates at a reduced rate of 2400 bps with four phase differentially encoded modulation and uses a data signaling rate of 4800 bps with eight phase differentially encoded modulation. It is the modulation scheme used in Group 3 facsimile (G3 fax) for image transfer at 4800bps and 2400bps.

This fax modem software consists of transmitting functions and receiving functions which are called to transmit/receive bits in groups of 2 or 3 (referred to as symbols) at a rate of 1200 or 1600 symbols per second respectively. It also features optional backward channel at modulation rates of up to 75 symbols per second. In addition, it is highly optimized in C and is multi-channel ready.

This V.27ter fax modem software belongs to GAO's family of Fax Software. Other products in this line includes V.21 Channel 2 Fax Software which provides a 300 bits per second duplex modem standard for use in the general switched telephone network, T.30/T.30E Fax Control Protocol Software which enables the efficient transmission of high quality, full color and gray-scale images over the general switched telephone network and other networks, T.38 Fax Relay Software which allows the transfer of facsimile documents in real-time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols and T.4-TIFF Conversion Software.

G.711 Vocoder Features A-law and µ-Law Encoding and Decoding

Toronto, Canada - August 27th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.711 vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz. The most common applications for GAO's G.711 Vocoder are data compression over telephone networks.

GAO's G.711 implementation includes independent user-callable functions that perform all of the ¦̀-law and A-law encoding and decoding operations. The G.711 standard uses pulse code modulation (PCM) to compress, decompress, encode, and decode analog speech, which can then be transmitted and received as binary data.

The G.711 encoder creates a 64 kbps bit stream. It is compliant with the ITU-T G.711 standard which is a standard to represent 8 bit compressed pulse code modulation (PCM) samples for signals of voice frequencies sampled at the rate of 8000 samples/second. This standard has two forms: A-Law and µ-Law. The A-Law G.711 PCM encoder converts 13 bit linear PCM samples into 8 bit compressed PCM (logarithmic form) samples, and the decoder reverses the process. The µ-Law G.711 PCM encoder converts 14 bit linear PCM samples into 8 bit compressed PCM samples.

This G.711 Vocoder Belongs to GAO's family of Speech Vocoders. This line of vocoders complies with the ITU-T Vocoder standards for speech processing software and audio processing codecs. This line also includes G.722 Vocoder which Complies with the ITU-T H.320 standard for video conferencing, G.723.1 Vocoder which encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for the 5.3 Kbps and 6.3 Kbps channels respectively and G.728 LD-CELP Vocoder which implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth.

Caller Identification Software Features Highly Optimized Assembly

Toronto, Canada - August 20th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its caller identification software which is based on the Bell 202 or the V.23 standard. This high performance caller ID software is ideal for analog or digital telephones, video conferencing and answering machines.

This Caller Identification (ID) Software consists of two user-callable functions that perform the initialization and identification operations. It features highly optimized assembly or C implementations, low data and program memory requirements and complete caller ID information including name, number, time and date.

This caller ID software is compatible for virtually any international market and under different line length conditions and even poor line conditions. It also performs non-volatile storage of test programs/scripts and results and has the ability to perform Caller ID on Call Waiting (Type II) test and simulation.

This Caller Identification (ID) Software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Automatic Gain Control Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases, Call Progress (CP) Software which is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls, and Voice Activity Detector (VAD), Comfort Noise Generator (CNG) Software which is used to reduce the transmission rate during silence periods of speech.

GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP. GAO's products feature good quality, competitive price and good service and are well accepted by most customers in Canada, Mexico, Japan and North America.

V.17 Fax Software Supports V.24 Interchange Circuits

Toronto, Canada - August 13th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.17 Fax Modem software which implements the ITU-T V.17 recommendation for two-wire modem for facsimile applications with data rates up to 14,400bps. This V.17 fax modem solution operates within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic.

The V.17 fax software features half-duplex mode of operation supporting V.24 interchange circuits, and its frequency carrier operates at 1800 Hz with V.2 transmitted power level. It provides exchange of rate sequences during start-up to establish the data-rate, coding, and any other special facilities. QAM is used as the modulation scheme providing synchronous line transmission at 2400 baud. Its trellis coding rates are from 7200 to 14000 bps. This embedded fax software is compatible with commonly used processors such as TI C5000 and C6000 series DSPs, ARM processors and ADI DSPs and operates under such operating systems as Windows, VxWorks, and Linux.

The high performance V.17 fax software belongs to GAO's family of Fax Software. This line includes similar products such as V.34 Fax Modem Software which is the standard for dial up modems of up to 33,600bps, V.27ter Fax Software which implements the ITU-T V.27ter Recommendation used in the general switched telephone network, and T.38 Fax Relay Software which is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards. This line also includes Group 3 (G3) Fax Software Packages which is most commonly used for half duplex, Group 3 facsimile data communication along the GSTN or digital communication channels.

Adaptive Noise Suppression Algorithm Features ANSI C Code

Toronto, Canada - August 6th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its adaptive noise suppression algorithm which is designed to adaptively suppress both stationary and non-stationary background noise from speech. By taking advantage of the signal characteristics of human speech, the algorithm extracts the signals of interest and adaptively cancels the noise that is present in the background.

This adaptive noise suppression algorithm features real-time audio processing and C-callable functions. It provides natural sounding and undistorted speech output. Noises embedded in speech are especially perceivable when compressed and transmitted. Non-stationary background noises that change over time are even more perceivable when played back. By continuously tracking the characteristics of the noise signal, GAO's adaptive algorithm effectively eliminates this background noise, resulting in much clearer speech over the communication channel. The code is developed using ANSI C and can be ported to customers' platform of choice.

This adaptive noise suppression algorithm belongs to GAO's family of Telephony Software. This line provides a complete package for telephony that includes speech compression modules and telephony modules. Featured products in this line include Call Progress Software which is a tonal signaling standard used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls, Dual Tone Multi-Frequency Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone and Automatic Gain Control Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases.

G.726 Vocoder Used for Speech Transmission

Toronto, Canada - July 30th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.726 vocoder which is a superset of the ITU-T G.721 and G.723 standards and is originally designed as a half-rate alternative to G.711 audio companding. It is used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

GAO Research's G.726 vocoder complies with the ITU-T standard and operates at 40, 32, 24, and 16 kbps. It converts a 64 Kbps A - law or ¦̀-law PCM channel to or from a 40, 32, 24 or 16 kbps channel. The conversion is applied to the PCM bit stream using an ADPCM transcoding technique. Thus, the scheme has switchable transmission rates providing 4 kHz of audio bandwidth in conformance with the ITU-T standard.

This G.726 vocoder can encode 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀law encoded data into 2, 3, 4, or 5-bit code words. Since the algorithm encodes one sample at a time, the coding or decoding delay is effectively zero providing for robust, quality audio. In addition, processing frame size and input/output formats is user selectable.

This high performance G.726 Vocoder belongs to GAO's family of Speech Vocoders. This line also includes G.728 LD-CELP Vocoder which implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth, G.729, G.729A and G.729AB Speech Vocoders which provide toll-quality speech with only moderate processing requirements and delay times and also perform well in the presence of random bit errors.

All GAO Research's speech software have passed the test vectors specified by the ITU GAO also adheres to stringent quality control procedures, which is reflected in the well structured code, detailed design documentation and well-defined design and test plans. This ensures ease of integration, easy maintenance and a smooth upgrade path for further generation customer products.

Call Progress Software with Two User-callable Functions

Toronto, Canada - July 23rd, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its call progress software which consists of two user-callable functions that perform the detection, generation, and initialization operations. It provides full call progress tone detection and generation functionality and operates on PCM samples.

GAO's Call Progress (CP) software is implemented in assembly and C. It features low data and program memory requirements and can be easily configured to different cadences and tones. Using a tonal signaling standard, it is able to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls. The software module allows for such signals as Dial Tone, Busy Tone, Congestion Signal, Ring Back and Off Hook.

This Call Progress (CP) software belongs to GAO's family of Telephony Software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for Feature phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP. This line also includes Dual Tone Multi-Frequency (DTMF) Software which is an international signaling standard for touch-tone telephones, Acoustic Echo Cancellation Software which is an acoustic echo canceller that eliminates one of the biggest problems with hands-free speaker phones: acoustical echoes and Automatic Gain Control (AGC) Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases.

V.44 Data Compression Software for Packet Switched Networks

Toronto, Canada - July 16th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.44 data compression software which consists of both an encoder and decoder. It is ideal for packet switched networks such as the Internet. This V.44 data compression software is ratified by the ITU-T and is an improvement based on the existing V.42bis standard.

This V.44 data compression software implements all the mandatory features of V.44 ITU-T international standard. It uses a new string-matching algorithm for a higher degree of data compression, thus it increases upload and download speeds providing a particularly noticeable improvement over V.42. Depending on the data type, the compression ratios of 6:1 are attainable with V.44.

This V.44 data compression software is a lossless data compression procedure for use with V-series data circuit-terminating equipment (DCEs) as well as packet networks. V.44 applies more millions of instructions per second (MIPS) than V.42bis toward the same application data stream and yields better compression rates in almost any data stream in which V.42bis shows positive results. In addition, this V.44 data compression software supports automatic switching between compressed and transparent modes allowing overall performance gain without loss in throughput for file streams that are not compressible.

This V.44 data compression software belongs to GAO's family of Soft Modems. Products in this line include V.92 Modem Software which supplies a data rate of up to 48kbps, a significant improvement over V.90 which uses quadrature amplitude modulation (QAM), and the same upstream modulation as V.34, for a maximum speed of 33.6kbps and V.32 bis/V.32 Modem Software which is designed to process data in 10ms intervals. GAO provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

Multi-frequency R1/R2 software

Toronto, Canada - July 9th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering multi-frequency R1/R2 software which is an implementation of ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment. It is designed with highly optimized assembly or C implementation.

This MF R1/R2 software features low data and program memory requirements. Signaling systems R1 and R2 are used for inter-register signaling. The R1 signaling system is specified by the ITU-T as the North American standard and the R2 signaling system the specification used in Europe. Both signaling systems R1 and R2 consist of two parts: Line signaling and Register signaling. Line signaling is used to handle line and supervisory signals. Register signaling is used for address signals.

R1 and R2 line signaling operates in a digital transmission environment and operations are handled by signaling bits.R1 Register signaling handles address signals using MF in-band pulse signaling at frequencies of 700Hz to 1700Hz, at 200Hz increments. The combination of two of these frequencies determines the signal. R2 Register signaling handles address signals also by sending a combination of two fundamental frequencies. The R2 system uses two different sets of six frequencies to combine for the forward and backward signals.

This MF R1/R2 software belongs to GAO's family of Telephony Software. This line also includes Automatic Gain Control Software which can adaptively control the dynamic range of a speech signal without amplifying the noise between words and phrases, Call Progress Software which is a tonal signaling standard that is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls and Dual Tone Multi-Frequency Software which is commonly used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

T.4 ¨C TIFF Conversion Software for Image File Exchange

Toronto, Canada - July 2th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its T.4 ¨C TIFF conversion software which enables conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF). This T.4 - TIFF conversion software conducts checking of RTC pattern, error correction on T.4 data and reports the number of scan lines.

This software supports conversion from T.4 to TIFF as well as from TIFF and T.4. TIFF was designed as the industry standard for image file exchange. Every major desktop publishing and image processing software supports the TIFF format. Equipped with a tagged image format, new tags can be added at any time hence preventing the format from becoming obsolete and private tags can be defined to contain proprietary information within the TIFF file.

GAO's T.4 - TIFF conversion software supports most tags. It is fully compliant with ITU-T T.4 Recommendation and TIFF Specifications. The TIFF specification recommends 4 types of data compression schemes. In addition, GAO¡¯s T.4 - TIFF conversion software supports the CCITT Group 3 One-Dimensional modified Huffman RLE compression method.

This T.4 - TIFF conversion software belongs to GAO's family ofFax Software.This line also contains V.34 Fax Modem Software which is the standard for dial up modems of up to 33,600bps and incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V-series modems to make the best use of the available conditions and T.30 Fax Control Protocol Software which is procedures for document facsimile transmission in the general switched telephone network and is targeted for fax application as fax handshaking protocol. GAO Research Inc.provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

G.165 Line Echo Canceller Software for Full-duplex Operations

Toronto, Canada - June 25th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.165 line echo canceller software which can cancel line echoes caused by 2 to 4 wire conversion hybrids in telephone lines. It can be used in long distance voice communication especially in links involving satellite networks and intercontinental long-haul circuits.

This G.165 line echo cancellation software features double-talk detection which avoids divergence during double talk. It is designed for integration with other software modules from GAO Research such as our DTMF Encoder/Decoder to enhance performance. It is compliant with the ITU G.165 recommendation and is ideal for full-duplex operation.

GAO's line echo canceller consists of two user-callable functions that perform echo cancellation and initialization operations. GAO's G.165 line echo cancellation software is implemented in assembly or C. It can also be employed in addition to echo suppressors for long delays.

This G.165 line echo cancellation software belongs to GAO's family of Telephony Software.This line of products provides easy integration into other systems, easy maintenance and a smooth upgrade path for next-generation customer products. It contains Automatic Gain Control Software which controls the dynamic range of a speech signal without amplifying the noise between words and phrases and Call Progress Softwarewhich is a tonal signaling standard that is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls.

GAO has provided embedded modem software, fax modem software, speech codes, and telephony software that are suitable for different applications. Their good quality, specific features, multiple functions, and competitive prices make GAO the best choice of the worldwide customers. Most of our customers in North America are satisfied with our products and our best services.

V.92 Modem Software with Duplex Mode of Operation on PSTN

Toronto, Canada - June 18th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.92 modem software which has duplex mode of operation on the PSTN. It supports increased upstream rates, quick connect and Modem-On-Hold features which allows the modem to work in conjunction with call waiting.

By employing pulse code modulation in the upstream direction, V.92 supplies a data rate of up to 48 kbps which is a significant improvement over V.90¡¯s upstream speed of 33.6 kbps. This increase is made possible by setting the V.92 clock in the demodulation process and using it in the upstream modulation. This proves most useful in applications that involve large data transfers from user to ISP such as VoIP.

V.92¡¯s downstream rate remains unchanged from V.90 at 56 kbps. However, there are several improvements over the V.90 implementation such as quicker modem connection time which is achieved by faster handshaking and shortened start-up time accomplished by buffering information on past connections.

The V.92 Server Modem has the ability to temporarily put the 'Modem on Hold' (MOH) which is particularly useful for lines that have call waiting allowing users to receive a phone call without having to disconnect from their Internet session. It boasts adaptive techniques that enable the modems to achieve close to the maximum data signaling rates which the channel can support on each connection. It can also negotiate V.34 modulation upstream (downstream) if a connection will not support PCM modulation upstream (downstream). In addition, the software supports DSPs such as TI C5000 & C6000 series, ARM processors and ADI DSPs and OS such as Windows, VxWorks, and Linux.

This V.92 modem software belongs to GAO¡¯s family of Soft Modems.This line also includes similar products such as V.90 Modem Software which has a maximum upload speed of 36.6 kb/s and a maximum download speed of 56 kb/s, V.34 Modem Softwarewhich employs Trellis coding and provides adaptive signaling through line probing by adjusting to channel quality & capacity and V.42 Error Correction Protocol which is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data. s

T.38 Fax Relay Software Supports V.17/V.29/V.27ter Standards

Toronto, Canada - June 11th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its T.38 Fax Relay Software in compliance with the latest ITU-T recommendations. It is fully compliant with ITU-T T.38 fax relay specification and supports commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs and OS such as Windows and Linux. The T.38 fax relay software solution operates within a multi-tasking environment and is optimized for fixed-point arithmetic.

This fax relay over IP software allows the transfer of facsimile documents in real-time between two facsimile terminals over the Internet or other networks using IP protocols. The latest revision clarifies H.323, H.248.1, SIP and SDP call establishment and improves the compatibility between T.38 gateways and Group 3 facsimile. It is fully compliant with ITU-T T.38 fax relay specification while supporting V.17/V.29/V.27ter Standards.

GAO's T.38 fax relay software offers re-entrant implementation which is optimized for multi-channel support on a single DSP. It has been integrated and tested with fax data modems providing operating data rates of up to 14.4 kbps. A "spoofing" function is implemented to prevent jitter, delay or lost packets. In addition, this T.38 fax relay software provides support for both UDP and TCP.

This T.38 fax relay software belongs to GAO's family of Fax Software.This line includes various products such as V27ter Fax Modem Software which is 4800bps and 2400bps modem and is used in the general switched telephone network,V.34 Fax Modem Software which incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V series modems to make the best use of the available conditions, and T.4 Fax Modem Protocol which will work with T.30 and V series standards to enable two fax modems communicate with each other.

G.728 LD-CELP Vocoder with Multiple Functions

Toronto, Canada - June 4th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.728 LD-CELP vocoder which implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard. It is suitable for many applications including digital circuit multiplication equipment, video conferencing, digital telephony and multimedia products.

The software encodes 5 sample frames of 16-bit linear PCM data into 10-bit code words. It provides approximately 4 kHz of speech bandwidth. Using backward-adaptive linear predictive coding analysis, it is able to achieve a low trans-coding delay of 2 ms. It runs on most commercially available DSPs/microprocessors and most popular real time operating systems.

The ITU-T G.728 standard specifies the encoding of 8 kHz sampled speech signals for transmission over a 16 kbps channel. This recommendation contains the description of an algorithm for the coding of speech signals at 16 kbps using low-delay code excited linear prediction (LD-CELP).

This G.728 LD-CELP Vocoder belongs to GAO's family of Speech Vocoders.his line includes a wide variety of speech vocoders for speech processing software and audio processing codecs, such as G.729, G.729A and G.729AB Speech Vocoder which are based on Code Excited Linear Prediction Model (CELP) and Conjugate-Structure Algebraic CELP (CS-ACELP) and can be used in visual telephony, wireless communications, and digital satellite communication systems, G.726 Vocoderwhich converts a 64 Kbps A-law or ¦̀-law PCM channel to or from a 40, 32, 24 or 16 Kbps channel. The conversion is applied to the PCM bit stream using an ADPCM trans-coding technique, and other similar products.

G.711 Vocoder with Independent User-callable Functions

Toronto, Canada - May 28th, 2012 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its G.711 Vocoder for telephone networks. The G.711 codec provides a compression /decompression (companding) algorithm to deliver precision transmission of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard.

ITU-T G.711 is a standard to represent 8 bit compressed pulse code modulation (PCM) samples for signals of voice frequencies sampled at the rate of 8000 samples/second. The G.711 encoder creates a 64 Kbps bitstream. This standard has two forms: A-Law and µ-Law. The A-Law G.711 PCM encoder converts 13 bit linear PCM samples into 8 bit compressed PCM (logarithmic form) samples, and the decoder reverses the process. The µ-Law G.711 PCM encoder converts 14 bit linear PCM samples into 8 bit compressed PCM samples.

GAO's G.711 implementation includes independent user-callable functions that perform all of the ¦̀-law and A-law encoding and decoding operations. The G.711 standard uses pulse code modulation (PCM) to compress, decompress, encode, and decode analog speech, which can then be transmitted and received as binary data.

This G.711 vocoder belongs to GAO's family of Speech Vocoders. This line has provided various speech vocoders that can be used in different occasions. A featured and advanced product is G.722 Vocoderwhich utilizes a SB-ADPCM decoder and complies with the ITU-T H.320 standard for video conferencing. Another one is G.723.1 Dual Rate Speech Vocoderwhich specifies a coded representation that can be used for compressing the speech or other audio signal component of multimedia services at a very low bit rate as part of the overall H.324 family of standards. This line of vocoders complies with the ITU-T vocoder standards for speech processing software and audio processing codecs.

Dual Tone Multi-Frequency Software for Telephone Systems

Toronto, Canada - May 21th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its Dual Tone Multi-Frequency Software which is an implementation of a Dual-Tone Multi-Frequency generator and decoder. It is an international signaling standard for touch-tone telephones.

DTMF has a variety of uses in telephone systems. It is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone. The DTMF generator generates standard telephone digits as the sum of sinusoids corresponding to a frequency table for each digit. The DTMF decoder will take a digital signal as input and produce the decoded digit. GAO's DTMF software generates and decodes 8 kHz PCM samples.

GAO's DTMF generator and decoder consist of four user-callable functions that perform the generating, decoding, and initialization operations. This dual tone multi-frequency software features user-callable functions, low data and program memory requirements. It is fully compliant to EIA/TIA - 464B 6.1.4 and 6.1.5.1 to 6.1.5.5. And it is implemented in assembly and C.

This dual tone multi-frequency software belongs to GAO's family of Telephony Software.. This line provides the user various featured telephony modules such asCall Progress, Voice Activity Detection, Comfort Noise Generator, and Acoustic Echo Cancellation.GAO provides a complete package for telephony that can be used for Feature phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP.

Adaptive Noise Suppression Algorithm Features Real-Time Audio Processing

Toronto, Canada - May 14th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its adaptive noise suppression algorithm. It is designed to suppress both stationary and non-stationary background noise from speech.

TThis adaptive noise suppression algorithm features real-time audio processing and C-callable functions. Taking advantage of the signal characteristics of human speech, the algorithm extracts the signals of interest and adaptively cancels the noise that is present in the background. It provides natural sounding and undistorted speech output.

Noises embedded in speech are especially perceivable when compressed and transmitted. Non-stationary background noises that change over time are even more perceivable when played back. By continuously tracking the characteristics of the noise signal, GAO's adaptive algorithm effectively eliminates this background noise resulting in much clearer speech over the communication channel. The code is developed using ANSI C and can be ported to a wide range of DSP and microprocessor platforms.

This adaptive noise suppression algorithm belongs to GAO's family of Telephony Software.This line includes Line Echo Canceller (LEC) Software, Dual Tone Multi-Frequency (DTMF) Software, Voice Activity Detector (VAD), Call Progress (CP) Software, and some other similar products.GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for Feature phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP.

V.27ter Fax Software for General Switched Telephone Network

Toronto, Canada - May 7th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.27ter fax software for general switched telephone network. It implements the ITU-T V.27ter fax recommendation which incorporates a modem operating at either 4800 bps or 2400 bps. This fax modem software can also be integrated with other data modems, telephony, speech compression, and fax relay solutions for use in various applications such as communications and telecom.

This fax modem software consists of transmitting functions and receiving functions which are called to transmit and receive bits in groups of 2 or 3 (referred to as symbols) at a rate of 1200 or 1600 symbols per second respectively. It operates at a reduced rate of 2400 bps with four phase differentially encoded modulation and uses a data signalling rate of 4800 bps with eight phase differentially encoded modulation. It uses the Group 3 facsimile (G3 fax) modulation scheme for fax image transfer. It is highly optimized in C and is multi-channel ready. It also features optional backward channel at modulation rates of up to 75 symbols per second. In addition, this fax software can operate within a multi-tasking environment or as a stand-alone task and is optimized for fixed-point arithmetic.

This fax modem software belongs to GAO's family of Fax Software. Other products in the family are V.17, V.29 and V.34 fax software whose maximum bit rates are 14.4, 9.6 and 33.6 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols, GAO T.4 - TIFF Conversion Software which enables conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF).The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

G.723.1 Dual Rate Speech Coder for Video Phones, Audio/Video Conferencing and Media Gateways

Toronto, Canada - April 23rd, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.723.1 dual rate speech coder which is ideal for applications such as video phones, audio/video conferencing and media gateways.

This G.723.1 vocoder includes Silence Compression Scheme and Voice Activity Detection (VAD). It performs compression and decompression of 8 kHz speech signals with a compression ratio of up to 12:1. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for 5.3 kbps and 6.3 kbps channels respectively.

GAO's G.723.1 software has switchable transmission rates over 5.3 or 6.3 kbps channels providing 4 kHz of quality speech bandwidth in conformance with the ITU-T standard. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility. The ITU-T G.723.1 standard specifies a coded representation that can be used for compressing the speech or other audio signal components of multimedia services at a very low bit rate as part of the overall H.324 family of standards. It encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding. The excitation signal for the high rate coder is Multipulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP).

This G.723.1 vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.722.1 Vocoder , GSM-AMR (AMR-NB) Vocoder , G.729, G.729A and G.729AB Speech Vocoder which are ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products.

G.711 Vocoder for Telephone Networks

Toronto, Canada - April 16th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.711 vocoder for telephone networks. It provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard.

GAO Research's G.711 vocodercomplies with the ITU-T standard and operates at 64 kbps. Itincludes independent user-callable functions that perform all of the ¦̀-law and A-law encoding and decoding operations.G.711 ¦̀-law compresses frames of 14-bit linear PCM samples into frames of 8-bit logarithmic PCM code words, and G.711 A-law compresses 13-bit linear PCM samples into 8-bit logarithmic PCM code words.

This G.711 vocoder uses pulse code modulation (PCM) to compress, decompress, encode, and decode analog speech, which can then be transmitted and received as binary data. Two forms of companding standards, the µ-law and the A-laware specified.

This G.711 vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.722.1 Vocoder ,GSM-AMR (AMR-NB) Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second,G.726 Vocoder which is used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communicationsand G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products. This line of vocoders complies with the ITU-T vocoder standards for speech processing software and audio processing codecs.

Voice Activity Detector (VAD), Comfort Noise Generator (CNG)

Toronto, Canada - April 9th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its Voice Activity Detector (VAD), Comfort Noise Generator (CNG) software which is used to reduce the transmission rate during silentperiods of voice transmission.The system, allowing discontinuous transmission, ise based on a Voice Activity Detection (VAD) algorithm and a Comfort Noise Generator (CNG) algorithm that allows the insertion of an artificial noise during silent intervals.

This feature enables it to effectively avoid noise modulation introduced when the transmission is switched off. If the background acoustic noise presented during active periods abruptly disappears, the noise modulation may reduce the intelligibility of the speech. The purpose of the VAD is to reliably detect the presence or absence of speech and to convey this information to the CNG algorithm. The purpose of the CNG algorithm is to create a noise that matches the actual background noise with a global transmission cost as low as possible.This software is implemented in assembly or C. It features user-callable functions and is able to work with all speech vocoders.

This Voice Activity Detector (VAD), Comfort Noise Generator (CNG)belongs to GAO's family of Voice over IP software. Other products in the line include Digital Network Echo Canceller (ITU-T G.168) which is used for reducing the echo by digitally subtracting an estimated echo from the circuit echo, Dual Tone Multi-Frequency (DTMF) Software which has a variety of uses in telephone systems.and Automatic Gain Control (AGC) Software which is designed for speech processing applications. GAO VoIP software halves the transmission bandwidth by recognizing the periods when a party is silent and ceasing transmission during those periods. Comfort noise generation is also provided.

G.726 Vocoder Applied to the PCM Bit Stream

Toronto, Canada - March 31th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its G.726 Vocoder which is used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

GAO Research's G.726 vocoder complies with the ITU-T standard and operates at 40, 32, 24, and 16 kbps.It converts a 64 kbps A-law or ¦̀-law PCM channel to or from a 40, 32, 24 or 16 kbps channel.The conversion is applied to the PCM bit stream using an ADPCM transcoding technique. Thus, the scheme has switchable transmission rates providing 4 kHz of audio bandwidth. ITU-T G.726 is a superset of the ITU-T G.721 and G.723 standards and was originally designed as a half-rate alternative to G.711 audio companding.G.726 can encode 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀law encoded data into 2, 3, 4, or 5-bit code words.Since the algorithm encodes one sample at a time, the coding or decoding delay is effectively zero, providing for robust, quality audio. In addition, processing frame size and input/output formats is user selectable.

This G.726 vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.722.1 Vocoder,GSM-AMR (AMR-NB) Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/secondand G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products. This line of vocoders complies with the ITU-T vocoder standards for speech processing software and audio processing codecs.

V.34 Fax Modem SoftwareProvides Adaptive Signalling

Toronto, Canada - March 26th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.34 Fax Modem Software which implements the ITU-T V.34 standard for dial up modems of up to 33,600bps.The standard allows a half-duplex mode of operation for fax applications.TheV.34 faxmodem software provides adaptive signalling through line probing by adjusting to channel quality and capacity.

This V.34 faxmodem software features trellis coding and shell mapping which gives the modem a robust design even in the case of heavily impaired channels. It incorporates a high level of optional capabilities and adaptability than the lower V.series modems to make the best use of the available conditions. It operates on 2-wire, point-to-point circuits and dial up or leased circuits. The V.34 fax modem provides data signaling rates from 2400 to 33600 bps.It also utilizes QAM on each channel and operates in synchronous mode.

One of the most significant characteristics of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel. Unlike lower speed modem standards where nominal bandwidth was set using a fixed carrier frequency, both the bandwidth and carrier frequencies are adaptive in V.34. GAO has V34 fax modem software (fax data pump) available for Super Group 3 (Super G3) fax applications.

This fax modem software belongs to GAO's family of Fax Software. Other options products in the family are V.17, V.29 and V.27ter whose maximum bit rates are 14.4, 9.6 and 4.8 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

Call Progress (CP) Software for Telephone Network Systems

Toronto, Canada - March 19th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its Call Progress (CP) software for telephone network systems. It provides full call progress tone detection and generation functionality and operates on PCM samples.

GAO's Call Progress (CP) software is implemented in assembly and C and features low data and program memory requirements. It consists of two user-callable functions that perform the detection, generation, and initialization operations.

Using a tonal signalling standard, it is able to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls. The software module allows for such signals as Dial Tone, Busy Tone, Congestion Signal, Ring Back and Off Hook. In addition, this software can be easily configured to different cadences and tones.

This Call Progress (CP) software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

Dual Tone Multi-Frequency (DTMF) Software for Telephone Systems

Toronto, Canada - March 12th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its dual tone multi-frequency (DTMF) software for telephone systems. DTMF is an international signalling standard for touch-tone telephones.It is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

GAO's Dual Tone Multi-Frequency (DTMF) Software is implemented in assembly and C and features low data and program memory requirements. It is an implementation of a Dual-Tone Multi-Frequency (DTMF) generator and decoder. GAO DTMF generator and decoder consist of four user-callable functions that perform the generating, decoding, and initialization operations. The DTMF generator generates standard telephone digits as the sum of sinusoids corresponding to a frequency table for each digit. The DTMF decoder will take a digital signal as input and produce the decoded digit.The DTMF software generates and decodes 8 kHz PCM samples. It is fully compliant to EIA / TIA - 464B 6.1.4 and 6.1.5 .1 to 6.1.5.5 standards.

This dual tone multi-frequency (DTMF) software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software which provides full call progress tone detection and generation functionality and operates on PCM samples, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones,multi-channel computer telephony boards, soft PBXs and Voice over IP.

V.17 Fax Software Uses QAM

Toronto, Canada - March 5th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.17 fax software which implements the ITU-T V.17 recommendation for a two-wire modem for facsimile applications with rates up to 14,400 bps.This V.17 fax modem solution operates within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic.

The V.17 fax softwarefeatures half-duplex mode of operation supporting V.24 interchange circuits, and its frequency carrier operates at 1800Hz with V.2 transmitted power level. QAM is used as the modulation scheme providing synchronous line transmission at 2400 baud.Exchange of rate sequences is provided during start-up to establish the data-rate, coding, and any other special facilities. Its trellis coding rates are from 7200 to 14000bps. This embedded fax software is compatible with commonly used processors such as TI C5000 and C6000 series DSPs, ARM processors and ADIDSPs and operates under such operating systems as Windows, VxWorks, and Linux.

The V.17 fax software belongs to GAO's family of Fax Software. Thislinealso includes V.27, V.29 and V.34 fax software whose maximum bit rates are 4.8, 9.6 and 33.6 kbps. T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols are also included in this line. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.44 Data Compression Software Consists of Both an Encoder and Decoder

Toronto, Canada - February 27th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.44 data compression software. It is ideal for packet switched networks such as the Internet.

This V.44 data compression software is a lossless data compression procedure for use with V-series data circuit-terminating equipment (DCEs) as well as packet networks. It uses a new compression standard based on Lempel-Ziv that uses a new string-matching algorithm that increases upload and download speeds to make Internet access and Web browsing faster.

The V.44 data compression software consists of both an encoder and a decoderfor data transmission.V.44, which wasrecently ratified by the ITU-T, is similar to V.42bis with significant compression improvement for most file types including HTML files. V.44 applies more millions of instructions per second (MIPS) than V.42bis toward the same application data stream and yields better compression rates in almost any data stream in which V.42bis shows positive results. In addition, this V.44 data compression software supports automatic switching between compressed and transparent modes allowing overall performance gain without loss in throughput for file streams that are not compressible.

This V.44 data compression software belongs to GAO's family of Modem Software and Protocols. Other products in the family are V.34 Modem Software which has a maximum bit rate of 33.6 kbps, and V.32 bis/V.32 Modem Software which is designed to process data in 10ms intervals. The family also includes V.92 Modem Software, V.42bis Data Compression Software and V.42 Error Correction Protocol. The line of products provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP andmicroprocessors.

V.29 Fax Software with Transmission and Receiving Functions for Symbol Transfer

Toronto, Canada - February 20th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its V.29 fax software, which implements the ITU-T V.29 Recommendation and provides full-duplex data transmission at rates of 9600, 7200, and 4800 bps over 4-wire leased lines.

The fax modem software operates in either half or full duplex modes and has a "quick connect" feature. It consists of both transmission and receiving functions for symbol transfer in groups of 2 or 4 bits at rates of 2400 symbols per second respectively. The fax modem software uses amplitude and phase modulation for synchronous transmission. It is also the modulation technique used in Group 3 fax (G3 fax) for fax data transfer at 9600 and 7200 bps on 2-wire lines.

The fax software is available for a number of DSP and microprocessors. All GAO software are subject to the most stringent quality control procedures, which is reflected in its well-structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration into the user's system, easy maintenance, and a smooth upgrade path for next-generation products. Additionally, it can operate within a multi-tasking environment or as a stand-alone task and is highly optimized for fixed-point arithmetic.

This fax modem software belongs to GAO's family of Fax Software. This line also includes V.27, V.17 and V.34 fax software whose maximum bit rates are 4.8, 14.4 and 33.6 kbps. T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols are also included in this line. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

GSM-AMR (AMR-NB) Vocoder for Speech Compression

Toronto, Canada - February 13th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its GSM-AMR (AMR-NB) vocoder. It is mainly used for speech compression in the 3rd generation mobile telephony at 8000 samples/second.

This vocoder features optimized C or assembly code, low data and program memory requirements. GSM-AMR is a standard adapted by the 3rd Generation Partnership Project (3GPP). It is an Adaptive Multi Rate-Narrow Band (AMR-NB) speech codec. GAO's GSM-AMR codec has eight adaptive basic bit rates, 12.2, 10.2, 7.95, 7.40, 6.70, 5.90, 5.15 and 4.75 kbit/s. This codec works on the principle of Algebraic Code Excited Linear Prediction (ACELP) for all bit rates.

To reduce average bit rate, this codec supports the discontinuous transmission (DTX), using Voice Activity Detection (VAD) and Comfort Noise Generation (CNG) algorithms.

This GSM-AMR (AMR-NB) vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.726 Vocoder and G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products.GAO Research Inc. is a world-renowned provider of high quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors.

T.38 Fax Relay Software

Toronto, Canada - February 6th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its updated T.38 Fax Relay Software in compliance with the latest ITU-T recommendations. T.38 allows for the transfer of facsimile documents in real-time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols. The latest revision clarifies H.323, H.248.1, SIP and SDP call establishment and improves the compatibility between T.38 gateways and Group 3 facsimile.

GAO's T.38 fax relay software supports V.17, V.29, V.27ter, V.21ch2 and V.34 standards. It also offers re-entrant implementation which is optimized for multi-channel support on a single DSP. It has been integrated and tested with fax data modems providing operating data rates of up to 33.6 kbps. A "spoofing" function is implemented in the protocol engine of a T.38 relay to modify protocol commands and responses on the TDM side to prevent jitter, delay or lost packets. In addition, this T.38 fax relay software provides support for both UDP and TCP.

This T.38 fax relay software belongs to GAO's family of Fax Software. Other products in the family are V.27, V.17, V.29 and V.34 fax software whose maximum bit rates are 4.8, 14.4, 9.6 and 33.6 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols. This line provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

T.30 and T.30E Fax Control Protocol Software Targeted for Fax Application

Toronto, Canada - January 16th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its T.30 fax control protocol software. It implements ITU-T T.30 Recommendation, which is a procedure for document facsimile transmission in the general switched telephone network. GAO¡¯s T.30 software is targeted for fax applications as handshaking protocol.

This T.30 fax control protocol software establishes and manages communications between two fax modems. There are five phases of operation covering call set up, pre message procedure (selecting the communication mode), message transmission (including phasing and synchronization), post message procedure and call release.

GAO's T.30E software implements the procedure for Group 3 (G3 fax) document fax transmission of continuous-tone color images. T.30E enables the efficient transmission of high quality, full color and gray-scale images over GSTNs and other networks.

This AGC software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone, Acoustic Echo Cancellation Software (AEC), Caller ID Software and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

Automatic Gain Control (AGC) Software for Speech Processing

Toronto, Canada - January 8th, 2012 - GAO Research Inc.(www.GAOResearch.com) is offering its Automatic Gain Control (AGC) software for speech processing. AGC is an ideal solution for applications requiring consistent audio levels.

This automatic gain control (AGC) software features wide dynamic range, low data and program memory requirements and selectable depth and envelop of the gain control. It consists of two parts: voice activity detection and gain control. It adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases. It effectively reduces the volume if the signal is strong and raises it when it is weaker. This AGC software consists of two user-callable functions, AGCinit and AGC. The AGC software is implemented in assembly or C. In addition, it integrates easily with MP3, MPEG, TCP/IP and most popular real-time operating system.

This fax control protocol software belongs to GAO's family of Fax software. This line includes a wide variety of fax software products with different bit rates such as V.34 Fax Modem Software (maximum bit rate of 33.6 Kbps), V.29 Fax Software (maximum bit rate of 9.6 Kbps) and other similar products. This line also includes AT Fax Command Set, T.30 Fax Control Protocol Software and T.38 Fax Relay Software. The embedded fax software has been integrated and tested with fax data pumps that provide interfaces to PCM data.

Caller ID Software with Two User-Callable Functions

Toronto, Canada - December 19th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its caller ID software, which is ideal for analog or digital telephones, video conferencing and answering machines.

This Caller Identification (ID) Software consists of two user-callable functions that perform the initialization and identification operations. It features highly optimized assembly or C implementations and complete caller ID information including name, number, time and date.

Based on the Bell 202 or the V.23 standard, it has the ability to perform Caller ID on Call Waiting (Type II) test and simulation. It also performs non-volatile storage of test programs/scripts and results. Additionally, it is available for tests for virtually any international market and under different line length conditions. This software also features low data and program memory requirements.

This Caller Identification (ID) Software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software, Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

G.165 Line Echo Cancellation (LEC) Software for Long Distance Voice Communication

Toronto, Canada - December 11th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its G.165 line echo cancellation (LEC) software used in long distance voice communication especially in links involving satellite networks and intercontinental long-haul circuits.

This G.165 line echo cancellation software features double-talk detection which avoids divergence during double talk. It cancels electrical line echoes caused by 2-to-4 wire conversion hybrids in telephone lines. The line echo canceller is also designed for integration with other software modules from GAO such as our DTMF Encoder/Decoder to enhance performance.

GAO's G.165 line echo cancellation software is implemented in assembly or C and consists of two user-callable functions which perform echo cancellation and initialization operations. This software is compliant with the ITU G.165 recommendation and is ideal for full-duplex operation.

This G.165 line echo cancellation software belongs to GAO's family of Telephony Software. This line of products provides easy integration into other systems, easy maintenance and a smooth upgrade path for next-generation customer products. It includes Dual Tone Multi-Frequency (DTMF) Software, Voice Activity Detector (VAD), Adaptive Noise Suppression Algorithm and other similar products. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

Multi-Frequency (MF) R1/R2 Software for Multi-Frequency Signal Receiving

Toronto, Canada - December 4th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its multi-frequency (MF) R1/R2 software with highly optimized assembly or C implementation. It is fully compliant with the ITU-T Recommendations Q.320, Q.322, Q.323, and Q.441 for multi-frequency signal receiving equipment.

This MF R1/R2 software features low data and program memory requirements. Signalling systems R1 and R2 are used for inter-register signalling. The R1 signalling system is specified by the ITU-T as the North American standard and the R2 signalling system the specification used in Europe.

Both R1 and R2 signalling systems consist of two parts: line signalling and register signalling. Line signalling is used to handle line and supervisory signals. Register signalling is used for address signals. R1 Register signalling handles address signals using MF in-band pulse signalling at frequencies of 700 to 1700 Hz at 200 Hz increments. The combination of two of these frequencies determines the signal. R2 Register signalling handles address signals also by sending a combination of two fundamental frequencies. The R2 system uses two different sets of six frequencies to combine for the forward and backward signals.

This MF R1/R2 software belongs to GAO's family of Telephony Software. Other products in this line include Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone. This line also includes Acoustic Echo Cancellation Software (AEC), Voice Activity Detector (VAD), Comfort Noise Generator (CNG) and Automatic Gain Control (AGC) Software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

Adaptive Noise Suppression Algorithm

Toronto, Canada - November 27th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its adaptive noise suppression algorithm to suppress both stationary and non-stationary background noise from speech.

By taking advantage of the signal characteristics of human speech, the algorithm extracts the signals of interest and adaptively cancels the noise that is present in the background.

Noises embedded in speech are especially perceivable when compressed and transmitted. Non-stationary background noises that change over time are even more perceivable when played back. By continuously tracking the characteristics of the noise signal, GAO's adaptive algorithm effectively eliminates this background noise, resulting in much clearer speech over the communication channel.

This adaptive noise suppression algorithm features real-time audio processing and uses C-callable functions. It provides natural sounding and undistorted speech output. The code is developed using ANSI C and can be ported to customers' platform of choice.

This adaptive noise suppression algorithm belongs to GAO's family of Telephony Software. This line includes Line Echo Canceller (LEC) Software, Dual Tone Multi-Frequency (DTMF) Software, Voice Activity Detector (VAD) and other similar products. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for Feature phones, Internet Phones multi-channel computer telephony boards, soft PBXs and Voice over IP.

G.722.1 Vocoder for Wide-Band Audio Compression

Toronto, Canada - November 20th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its G.722.1 vocoder for wide-band audio compression. GAO Research's G.722.1 vocoder is compliant with the ITU-T standard and operates at bit rates of 24 kbps and 32 kbps. Like all wide-band speech coders, the speech signal is sampled at 16 kHz.

G.722.1 can handle speech and audio signal bandwidth up to 7 kHz, compared to 3.6 kHz in narrow band speech coders. G.722.1 vocoder is based on transform technology using a Modulated Lapped Transform (MLT). The vocoder operates on 20 msec frames (320 samples) of audio and has a look-ahead of 20 msec. The total algorithmic delay is 40 msec.

This G.722.1 speech vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.726 Vocoder and G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products. GAO Research Inc. is a world-renowned provider of high quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors.

G.726 Speech Vocoder Suited for Numerous Applications

Toronto, Canada - November 13th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its G.726 speech vocoder suited for numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications.

GAO Research's G.726 vocoder converts a 64 kbps A-law or ¦̀-law PCM channel to or from a 40, 32, 24 or 16 kbps channel. The conversion is applied to the PCM bit stream using an ADPCM transcoding technique. Thus, the scheme has switchable transmission rates providing 4 kHz of audio bandwidth in conformance with the ITU-T standard.

This G.726 vocoder complies with the ITU-T standard and operates at 40, 32, 24, and 16 kbps. ITU-T G.726 is a superset of the ITU-T G.721 and G.723 standards and was originally designed as a half-rate alternative to G.711 audio companding. G.726 can encode 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀law encoded data into 2, 3, 4, or 5-bit code words. Since the algorithm encodes one sample at a time, the coding or decoding delay is effectively zero, providing for robust, quality audio.

This G.726 vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.722.1 Vocoder and G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products.

Voice Activity Detector (VAD), Comfort Noise Generator (CNG)

Toronto, Canada - November 6th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its Voice Activity Detector (VAD), Comfort Noise Generator (CNG) software which is intended to reduce the transmission rate during silence periods of speech. The system allows discontinuous transmissions which are based on a Voice Activity Detection (VAD) algorithm and a Comfort Noise Generator (CNG) algorithm that allows the insertion of an artificial noise during silent intervals of speech.

This feature enables it to effectively avoid noise modulation introduced when the transmission is switched off. If the background acoustic noise presented during active periods will abruptly disappear, this very unpleasant noise modulation may even reduce the intelligibility of the speech. The purpose of the VAD is to reliably detect the presence or absence of speech and to convey this information to the CNG algorithm. The purpose of the CNG algorithm is to create a noise that matches the actual background noise with a global transmission cost as low as possible.

This Voice Activity Detector (VAD), Comfort Noise Generator (CNG) belongs to GAO's family of Voice over IP software. Other products in the line include Digital Network Echo Canceller (ITU-T G.168) which is used for reducing the echo by digitally subtracting an estimated echo from the circuit echo, Dual Tone Multi-Frequency (DTMF) Software which has a variety of uses in telephone systems.and Automatic Gain Control (AGC) Software which is designed for speech processing applications.

V.17 Fax Modem Software

Toronto, Canada - October 23rd, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.17 Fax Modem Software which implements all the mandatory features of the V.17 ITU-T international standard. It can work within a multi-tasking environment or as a stand-alone task and is optimized for various DSPs and processors such as TI C5000 and C6000 series DSPs, ARM processors and ADI DSPs.

The V.17 fax modem software enables fax modem operation at speeds ranging from 14.4 kbps to 2.4 kbps allowing it to connect even over noisy lines. It also uses QAM for the channel with synchronous line transmission at 2400 baud. The V.17 fax software features half-duplex mode of operation supporting V.24 interchange circuits and its frequency carrier operates at 1800 Hz with V.2 transmitted power level and 2400 symbols/s modulation rate.

The V.17 fax software provides exchange of rate sequences during start-up to establish the data-rate, coding and any other special facilities. Its trellis coding rates are from 7200 to 14000bps. In addition, it can be integrated with GAO's other data modem, telephony, speech compression, VoIP, FoIP, and video software for various applications.

This V.17 fax modem software belongs to GAO's family of Fax Software. Other products in the line include V.27, V.29 and V.34 fax software whose maximum bit rates are 4.8, 14.4 and 33.6 kbps. The family also includes T.38, T.30/T.30E and T.4 fax modem protocols.

V.44 Data Compression Software

Toronto, Canada - October 16th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.44 Data Compression Software which implements all the mandatory features of V.44 ITU-T international standard. It uses a new string-matching algorithm for a higher degree of data compression, thus increasing upload and download speeds providing a particularly noticeable improvement over V.42.

This V.44 data compression software consists of both an encoder and decoder. It is used with V-series data circuit-terminating equipment (DCEs) as well as packet switch networks such as the Internet. This software offers better compression performance for certain types of data than the V.42bis standard. Depending on the kind of data, compression ratios of 6:1 are attainable with V.44. It automatically switches between compressed and transparent modes, allowing overall performance gain without loss in throughput for file streams that are not compressible.

This V.44 data compression software belongs to GAO's family of Soft Modems. GAO also provides the full suite of modem software: V.92, V.90, V.34, V.32bis/ V.32, V.22bis/ V.22, V.23, V.21, Bell 212A, and Bell 202 software modems. These modem software can be integrated with GAO's other fax, telephony, speech compression, VoIP, FoIP, Imaging and Video software.

V.92 Software

Toronto, Canada - September 28th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.92 Modem Software which performs duplex mode operation on the PSTN. It boasts increased upstream rates, quicker connect (QC), and Modem-On-Hold (MOH) feature that allows the modem to work in conjunction with call waiting.

This V.92 modem software is used for both the upstream and downstream connections, allowing for a maximum upload speed of 48 kb/s and a maximum download speed of 56 kb/s. It boasts adaptive techniques that enable the modems to achieve close to the maximum data signalling rates which the channel can support on each connection. It can also negotiate V.34 modulation upstream (downstream) if a connection will not support PCM modulation upstream (downstream).

The connection time of V.92 modem software is up to 50% quicker than V.90 for buffered connections. The V.92 Server Modem is a digital modem with a maximum transmission bit rate of 56 kbps and reception bit rate of 48 kbps. The V.92 Client Modem is an analog modem with a maximum bit rate of 56 kbps receive, 48 kbps transmit.

V.92 has the ability to temporarily put the 'Modem on Hold' (MOH) which is particularly useful for lines that have call waiting, allowing users to receive a phone call without having to disconnect from their Internet session. The MOH have a time limit of between 0 to 16 minutes which is set entirely at the discretion of the ISP. In addition, the software supports DSPs such as TI C5000 & C6000 series, ARM processors and ADI DSPs and OS such as Windows, VxWorks, and Linux.

This V.92 modem software belongs to GAO's family of Soft Modems. Other products in the family are V.90 Modem Software which has a maximum upload speed of 36.6 kb/s and a maximum download speed of 56 kb/s, and V.34 Modem Software which has a maximum bit rate of 36.6 kb/s. The family also includes ITU V.23 Modem Software, ITU V.21 Modem Software, and some other modem software. The line of products provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.34 Fax Modem Software

Toronto, Canada - September 21st, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.34 Fax Modem Software which implements all the mandatory features of V.34 ITU-T international standard and incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V. series modems to make the best use of the available conditions. It can be integrated with GAO's other data modem, telephony, speech compression, FoIP, VoIP, DSVD, imaging and video software for various applications.

This V.34 fax modem software supports data rates of 2.4 kbps up to 33.6 kbps in steps of 2.4 kbps. It enables full duplex, point-to-point 2 wire data communication over PSTN as well as leased circuits. The V34 modem software includes Trellis coding and shell mapping which makes it more robust over impaired channels. One of the most significant characters of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel.

As compared to the lower speed fax modem software, GAO's V.34 fax modem software has adaptive bandwidth and carrier frequencies and provides adaptive signalling through line probing by adjusting to channel quality and capacity. In addition, it also utilizes QAM on each channel and operates in synchronous mode.

This V.34 fax modem software belongs to GAO's family of Fax Software. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors. Other options products in the family are V.17, V.27ter and V.29 whose maximum bit rates are 14.4, 4.8 and 9.6 kbps. The family also includes T.38, T.30/T.30E and T.4 fax modem protocols.

Dual Tone Multi-Frequency (DTMF) Software

Toronto, Canada - September 7th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its dual tone multi-frequency (DTMF) software for telephone systems. It is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.

This DTMF software is an implementation of a Dual-Tone Multi-Frequency (DTMF) generator and decoder. The DTMF generator and decoder consist of four user-callable functions that perform the generating, decoding, and initialization operations. The DTMF generator generates standard telephone digits as the sum of sinusoids corresponding to a frequency table for each digit. The DTMF decoder will take a digital signal as input and produce the decoded digit.

The DTMF software generates and decodes 8 kHz PCM samples. It is fully compliant to EIA / TIA - 464B 6.1.4 and 6.1.5 .1 to 6.1.5.5 standards. It also features low data and program memory requirements.

This dual tone multi-frequency (DTMF) software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software which provides full call progress tone detection and generation functionality and operates on PCM samples, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

Caller Identification (ID) Software

Toronto, Canada - September 1st, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its embedded caller identification (ID) software, a highly optimized implementation of the caller identification function available for a variety of DSPs and microprocessors. It is ideal for analog or digital telephones, video conferencing, and answering machines.

This Caller Identification (ID) Software consists of two user-callable functions that perform the initialization and identification operations. It features highly optimized assembly or C implementations and complete caller ID information including name, number, time, and date.

Based on the Bell 202 or the V.23 standard, it has the ability to perform Caller ID on Call Waiting (Type II) test and simulation. It also performs non-volatile storage of test programs/scripts and results.

Apart from the above, this software also features low data and program memory requirements and can test products for performance under poor line conditions.

This Caller Identification (ID) Software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software, Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

V.34 Fax Modem Software

Toronto, Canada - August 29th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.34 Fax Modem Software which is the standard for dial up modems of up to 33,600bps. It provides adaptive signalling through line probing by adjusting to channel quality and capacity.

This V.34 fax modem software incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower V. series modems to make the best use of the available conditions. It operates on 2-wire, point-to-point circuits and dial up or leased circuits.

The V.34 fax modem software features trellis coding and shell mapping which makes this modem a robust design for heavily impaired channels. One of the most significant characters of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel. Unlike lower speed modem standards where nominal bandwidth was set using a fixed carrier frequency, both the bandwidth and carrier frequencies are adaptive in V.34. The V.34 fax modem provides data signaling rates from 2400 to 33600 bps. It also utilizes QAM on each channel and operates in synchronous mode.

This fax modem software belongs to GAO's family of Fax Software. Other options products in the family are V.17, V.29 and V.27ter whose maximum bit rates are 14.4, 9.6 and 4.8 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

G.723.1 Vocoder

Toronto, Canada - August 22nd, 2011 - GAO Research Inc.(www.GAOResearch.com) has launched its G.723.1 vocoder, a dual rate speech coder, which is available for applications such as video phones, audio/video conferencing and media gateways.

This G.723.1 dual rate speech coder performs compression and decompression of 8 kHz speech signals. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for the 5.3 kbps and 6.3 kbps channels respectively.

GAO's G.723.1 software has switchable transmission rates over 5.3 or 6.3 kbps channels providing 4 kHz of quality speech bandwidth in conformance with the ITU-T standard. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU-T G.723.1 standard specifies a coded representation that can be used for compressing the speech or other audio signal component of multimedia services at a very low bit rate as part of the overall H.324 family of standards.

It encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding. The excitation signal for the high rate coder is Multipulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP).

Additionally, Silence Compression Scheme and Voice Activity Detection (VAD) are also included in this version.

This G.723.1 vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of vocoders such as G.722.1 Vocoder and G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems and other similar products.

V.29 Fax Software

Toronto, Canada - August 16th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.29 Fax Software. The embedded software implements the ITU-T V.29 Recommendation and provides full-duplex data transmission at rates of 9600, 7200, and 4800 bps over 4-wire leased lines.

The fax modem software consists of both transmission and receiving functions for symbol transfer in groups of 2 or 4 bits at rates of 2400 symbols per second respectively. It operates in either half or full duplex modes and has a "quick connect" feature.

Using the Group 3 fax (G3 fax) modulation technique, it offers fax data transfer at 9600 bps and 7200 bps on two-wire lines. The fax software is available for a number of DSP and microprocessors. All GAO software are subject to the most stringent quality control procedures, which is reflected in its well structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration into the user's system, easy maintenance, and a smooth upgrade path for next-generation products.

Additionally, it can operate within a multi-tasking environment or as a stand-alone task and is highly optimized for fixed-point arithmetic.

This fax modem software belongs to GAO's family of Fax Software. Other products in the line include V.27, V.17 and V.34 fax software whose maximum bit rates are 4.8, 14.4 and 33.6 kbps. This line also includes T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

Call Progress (CP) Software

Toronto, Canada - August 8th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its Call Progress (CP) software for telephone network systems. It provides full call progress tone detection and generation functionality and operates on PCM samples.

The Call Progress (CP) software consists of two user-callable functions that perform the detection, generation, and initialization operations.

Using a tonal signaling standard, it is able to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls. The software module allows for such signals as Dial Tone, Busy Tone, Congestion Signal, Ring Back and Off Hook.

Apart from the above, this software also features low data and program memory requirements and can be easily configured to different cadences and tones.

This Call Progress (CP) software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

G.728 LD-CELP vocoder

Toronto, Canada - August 4th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its G.728 LD-CELP vocoder for digital circuit multiplication equipment, videoconferencing, digital telephony, and multimedia products.

This G.728 vocoder operates at 16 kbps and implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth.

Using backward-adaptive linear predictive coding analysis, it is able to achieve a low transcoding delay of 2 ms.

The ITU-T G.728 standard specifies the encoding of 8 kHz sampled speech signals for transmission over a 16 Kbps channel.

Apart from the above, this G.728 vocoder uses adaptive post filter to enhance performance for multiple transcodings(VAD).

This G.728 LD-CELP vocoder belongs to GAO's family of Speech Vocoders. This line includes a wide variety of speech vocoders for speech processing software and audio processing codecs, such as G.729, G.729A and G.729AB Speech Vocoder which perform well in the presence of random bit errors, G.726 Vocoder, G.722.2 (AMR-WB) Vocoder and other similar products.

G.711 Vocoder

Toronto, Canada - July 31st, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its G.711 Vocoder for telephone networks. It provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz in conformance with the ITU-T G.711 standard.

This G.711 vocoder operates at 64 kbps. It includes independent user-callable functions that perform all of the ¦̀-law and A-law encoding and decoding operations. It uses pulse code modulation (PCM) to compress, decompress, encode, and decode analog speech, which can then be transmitted and received as binary data. Two forms of companding standards, the µ-law and the A-law, are specified. G.711 ¦̀-law compresses frames of 14-bit linear PCM samples into frames of 8-bit logarithmic PCM code words and G.711 A-law compresses 13-bit linear PCM samples into 8-bit logarithmic PCM code words.

This G.711 vocoder belongs to GAO's family of Speech Vocoders. This line of products also includes G.729, G.729A and G.729AB Speech Vocoder which is ideal for visual telephony, wireless communications, and digital satellite communication systems, G.726 Vocoder which is used in numerous applications such as speech transmission over digital networks, video conferencing, multimedia, and ISDN communications, G.722 Vocoder and GSM-AMR (AMR-NB) Vocoder which is used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second.

V.42bis Data Compression Software

Toronto, Canada - July 21st, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its T.38 Fax Relay Software. It allows the transfer of facsimile documents in real-time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols.

This T.38 fax relay software is fully compliant with ITU-T T.38 fax relay specification and supports V.17, V.29, V.27ter, V.21ch2 standards. When integrated and tested with fax data modems, it provides operating data rates of up to 14.4 kbps. It also offers re-entrant implementation which is optimized for multi-channel support on a single DSP and a "spoofing" function to prevent jitter, delay or lost packets. In addition, this T.38 fax relay software supports UDP and TCP.

This T.38 fax relay software belongs to GAO's family of Fax Software. Other products in the family are V.27, V.17, V.29 and V.34 fax software whose maximum bit rates are 4.8, 14.4, 9.6 and 33.6 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.42bis Data Compression Software

Toronto, Canada - July 13th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.42bis data compression software. It enhances the performance of error correcting modems by making better use of an often over-crowded communications channel.

This V.42bis data compression software implements ITU-T V.42bis recommendation. By using a variable length code to represent fixed length characters, the most commonly transmitted characters are compressed and represented by a codeword much smaller than the conventional bit code. The V.42bis data compression modem software protocol increases the throughput by compressing certain types of data. GAO's V.42bis compression software protocol provides codeword sizes from 512 bytes up to 2048 bytes that are selected depending upon the resources available. It can be used with V.42 error correction protocol or as standalone compression software. APIs are accordingly provided. In addition, the system uses a dictionary, which has a hierarchical tree structure, to store frequently occurring character strings, along with a code to represent these character strings.

This V.42bis data compression software belongs to GAO's family of Soft Modems. Other products in the family are V.34 Modem Software which has a maximum bit rate of 33.6 kbps, and V.32 bis/V.32 Modem Software which is designed to process data in 10 ms intervals. The family also includes V.44 Data Compression Software, V.90 modem software and V.42 Error Correction Protocol. The line of products provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

Automatic Gain Control (AGC) Software

Toronto, Canada - July 6th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its automatic gain control software designed for speech processing applications. This AGC software is an ideal solution for applications requiring consistent audio levels.

This automatic gain control software consists of two parts: voice activity detection and gain control. It boasts wide dynamic range, low data and program memory requirements and selectable depth and envelop of the gain control. It consists of two user-callable functions, AGCinit and AGC. This AGC software adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases. It effectively reduces the volume if the signal is strong and raises it when it is weaker. The AGC software is implemented in assembly or C. In addition, it integrates easily with MP3, MPEG, TCP/IP and most popular real-time operating system.

This AGC software belongs to GAO's family of Telephony Software. This line includes a wide variety of telephony modules such as Dual Tone Multi-Frequency (DTMF) Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

V.90 Modem Software

Toronto, Canada - June 29th, 2011 - GAO Research Inc.(www.GAOResearch.com) has launched its V.90 modem software which implements the V.90 ITU-T recommendation for modems that can connect at data rates of up to 56 kbps. The standard specifies a pair of high-speed modems, one digital and the other analog, which are designed for Internet use.

This V.90 modem software provides a downstream connection speed of up to 56 kbps. It features synchronous data signalling rates in the downstream direction from 28000 to 56000 bps in increments of 8/6 kbps. Most ISPs are digitally connected both to the Internet and to the telephone company's central office (CO). When this is the case, there is a clear digital connection downstream from the ISP's modem to the CO's line card that serves the user and contains a digital to analog converter. It uses V.34 modulation in the upstream direction to avoid quantization noise between the ISP and CO. The V.90 Server Modem is a digital modem with a maximum transmission bit rate of 56 kbps and reception bit rate of 33.6 kbps. The V.90 Client Modem is an analog modem with a maximum bit rate of 56 kbps receive, 33.6 kbps transmit. They software is available for various processors and DSPs.

This V.90 modem software belongs to GAO's family of Soft Modems. Other products in the family are V.34 Modem Software which has a maximum bit rate of 33.6 kbps, and V.32 bis/V.32 Modem Software which is designed to process data in 10 ms intervals. The family also includes V.44 Data Compression Software, V.42bis Data Compression Software and V.42 Error Correction Protocol. The line of products provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

T.4 - TIFF Conversion Software

Toronto, Canada - June 23rd, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its T.4 - TIFF conversion software .It enables the conversion between the ITU-T T.4 Recommendation fax file format and the Tagged Image File Format (TIFF).

This T.4 - TIFF conversion software conducts checking of RTC pattern, error correction on T.4 data, and reports the number of scan lines. It supports conversion from T.4 to TIFF as well as from TIFF and T.4. GAO's T.4 - TIFF conversion software supports most tags. It is fully compliant with ITU-T T.4 Recommendation and TIFF Specifications. The TIFF specification recommends 4 types of data compression schemes. In addition, GAO's T.4 - TIFF conversion software supports the CCITT Group 3 One-Dimensional modified Huffman RLE compression method.

This T.4 - TIFF conversion software belongs to GAO's family of Fax Software. Other products in the family are V.27, V.17, V.29 and V.34 fax software whose maximum bit rates are 4.8, 14.4, 9.6 and 33.6 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols, and T.38 fax relay protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.21 Channel 2 Fax Software

Toronto, Canada - June 15th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.21 Channel 2 Fax Software. It can be integrated with data modems, telephony, speech compression, and fax relay solutions for use in various telecommunications applications.

V.21 Channel 2 fax software implements channel two of the ITU-T V.21 recommendation and provides a 300 bits per second duplex modem standard for use in the general switched telephone network. The ITU-T V.21 Recommendation states that Frequency Shift Modulation (FSM) should be used resulting in a modulation rate being equal to the data signaling rate. The nominal mean frequency for channel 2 is 1750 Hz. Channel 2 shall be used for transmission of check signals and service signals from the called station to the call-originating station, regardless of the direction in which the data are transmitted.

V.21 Channel 2 fax software belongs to GAO's family of Fax Software. This line includes a wide variety of products such as V.17, V.29 and V.34 fax software whose maximum bit rates are 14.4, 9.6 and 33.6 kbps respectively. The family also includes T.30/T.30E and T.4 fax modem protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.27ter Fax Software

Toronto, Canada - June 9th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.27ter fax modem software. It implements the ITU-T V.27ter fax recommendation which incorporates a modem operating at either 4800 bps or 2400 bps. It is commonly used in the general switched telephone network. This fax modem software can also be integrated with other data modems; telephony, speech compression, and fax relay solutions for use in various applications such as communications and telecom.

This fax modem software consists of transmitting functions and receiving functions which are called to transmit and receive bits in groups of 2 or 3 (referred to as symbols) at a rate of 1200 or 1600 symbols per second respectively. It is highly optimized in C and multi-channel ready. It uses the Group 3 facsimile (G3 fax) modulation scheme for fax image transfer. It also features optional backward channel at modulation rates of up to 75 symbols per second. In addition, this fax software can operate within a multi-tasking environment or as a stand-alone task and is optimized for fixed-point arithmetic.

This V.27ter fax software belongs to GAO's family of Fax Software. Other products in the family are V.17, V.29 and V.34 fax software whose maximum bit rates are 14.4, 9.6 and 33.6 kbps. The family also includes T.30/T.30E and T.4 fax modem protocols. The family provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.44 Data Compression Software

Toronto, Canada - June 6th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.44 data compression software which consists of both an encoder and decoder. It is ideal for packet switched networks such as the Internet.

This V.44 data compression software is the newest data compression software ratified by the ITU-T and is improvement on the existing V.42bis standard. It uses a new string-matching algorithm for a higher degree of data compression and thus increases upload and download speeds. Depending on the data type, the compression ratios of 6:1 are attainable with V.44.

This V.44 data compression software belongs to GAO's family of Soft Modems. Other products in the family are V.34 Modem Software which has a maximum bit rate of 33.6 kbps, and V.32 bis/V.32 Modem Software which is designed to process data in 10 ms intervals. The family also includes V.92 Modem Software, V.42bis Data Compression Software and V.42 Error Correction Protocol. The line of products provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

V.92 Modem Software

Toronto, Canada - May 16th, 2011 - GAO Research Inc.(www.GAOResearch.com) is offering its V.92 Modem Software which employs pulse code modulation (PCM) in the upstream direction and provides a data rate of up to 48 kbps, which proves most useful in applications that involve large data transfers from user to ISP such as VoIP.

This V.92 modem software provides a downstream rate of up to 56 kbps and a quicker modem connection time which is achieved through faster handshaking. The connection time of V.92 modem software is up to 50% quicker than V.90 for buffered connections. The V.92 Server Modem is a digital modem with a maximum transmission bit rate of 56 kbps and reception bit rate of 48 kbps. The V.92 Client Modem is an analog modem with a maximum bit rate of 56 kbps receive, 48 kbps transmit. When online, users have the ability to put the 'Modem on Hold' (MOH) and can receive a phone call without having to disconnect from their Internet session. The MOH does have a time limit of between 0 to 16 minutes which is set entirely at the discretion of the ISP. The software supports DSPs such as TI C5000 & C6000 series, ARM processors and ADI DSPs and OS such as Windows, VxWorks, and Linux.

This V.92 modem software belongs to GAO's family of Soft Modems. Other products in the family are V.34 Modem Software which has a maximum bit rate of 33.6 kbps, and V.32 bis/V.32 Modem Software which is designed to process data in 10 ms intervals. The family also includes V.44 Data Compression Software, V.42bis Data Compression Software and V.42 Error Correction Protocol. The line of products provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

KYLINK Communications Corp. Licenses GAO's Fax Monitoring Software

Toronto, Canada - March 22nd, 2011 - GAO Research Inc.(www.GAOResearch.com) a leading provider of embedded communication software, announced today that it has licensed its embedded fax monitoring software solution to KYLINK Communications Corp., the largest PABX developer and manufacturer in Taiwan.

In situations when network operators must provide lawful interception information to governments and authorities upon their requests, GAO's fax monitoring software can serve the purpose by decoding the standard and/or non-standard faxes for both real time and recorded sessions. KYLINK is undertaking a government project to implement the fax monitoring feature in one of its products.

"Our optimized fax monitoring software supports 2-wire communication decoding. It also supports full and half 4-wire modes, automatic and manual operation modes. It's able to decode V.34 and all fall back fax speeds with a debugging message ON/OFF switch" said Dr. Frank Gao, president of GAO Research Inc. "This has allowed KYLINK to add this function on its existing platform without adding additional hardware. Our embedded communication subsystems allow for functional upgrades through software, which ensure quick design turnaround and performance improvements."

"For important recordings with insufficient signal quality and data, the manual operation mode of GAO's fax monitoring software may be able to recover some or all of the relevant data. This is an extremely important feature to us." said Tom Sheen, Chief Technology Officer at KYLINK. "We selected GAO as our provider because of their experience, their expertise in embedded software and timely support. We are very happy with the level of optimization and the software performance."

About KYLINK Communications Corp.

KYLINK Communications Corp. was established in 1976. It's the largest PABX developer and manufacturer in Taiwan. Its main products include PBX, IP PBX , GPS vehicle tracking system, FHSS radio system, DSSS radio system, digital tactical PBX, VoIP gateway, military and police wireless communication systems, DECT communication systems, and other customized design communication systems.

About GAO Research Inc.

GAO Research Inc. is the market-leader in embedded communication software products for DSP & Microprocessor environments, and one of the fastest growing companies in Canada. GAO's embedded communications modules are used by telecommunications, semiconductor, and electronics manufacturers worldwide. GAO offers its VoIP & FoIP modules, V.92 & V.90 with all fallback soft-modems, Super G3 & G3 fax software and G.7xx speech codecs on the broadest range of DSPs and microprocessors. GAO's customers include Motorola, Lucent, Alcatel, Qualcomm, Philips, Agilent, OKI, Samsung, Siemens, Infineon, LG Electronics, Toshiba and other global customers.

Acoustic Echo Cancellation (AEC) Software

Toronto, Canada - March 18th, 2011 - GAO Research Inc.(www.GAOResearch.com) has released a new revision of its Acoustic Echo Cancellation (AEC) software, which is fully compliant with the ITU G.167 standard. The acoustic echo canceller eliminates acoustical echoes for of hands-free speaker phones. It runs on most commercially available DSPs/microprocessors and under popular real time operating systems.

This AEC software boasts high-performance full duplex operation, robust double-talk detection, high signal to noise ratio and Automatic Gain Control. The software is implemented in assembly or C and has user-callable functions. It can be easily integrated with applications in standard or cell phones, teleconferencing systems and hands-free car phone products. The AEC software works efficiently even requiring little data memory, program memory and computational requirements.

T.38 Fax Relay over IP Software

Toronto, Canada - March 14th, 2011 - GAO Research Inc.(www.GAOResearch.com) has released its enhanced T.38 fax relay software which is fully compliant with ITU-T T.38 fax relay specification while supporting V.34, V.17, V.29, V.27ter, and V.21ch2 standards. This T.38 fax relay software solution can operate within a multi-tasking environment and is optimized for fixed-point arithmetic. It operates on commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs and under many OSs available in the market.

This fax relay over IP software allows the transfer of facsimile documents in real-time between two fax terminals over the Internet or other networks by using IP protocols. It has been integrated and tested with fax data pumps that support data rates up to 33.6 kbps and it works well with transport layer protocols such as UDP and TCP. This fax relay over IP software also features re-entrant implementation optimized for multi-channel support on a single DSP. A "spoofing" function is included to prevent jitter, delay or lost packets.

G.722.2 (AMR-WB) Vocoder

Toronto, Canada - March 7th, 2011 - GAO Research Inc.(www.GAOResearch.com) has announced the release of its updated G.722.2 (AMR-WB) vocoder compliant with the ITU-T G.722.2 standard. The software is mainly used for wide-band audio and speech compression. This vocoder uses an Adaptive Multi-Rate Wide-Band (AMR-WB) codec and has passed all ITU-T test vectors. It is available for various applications including Wi-Fi phones VoWLAN, Wireless GPRS EDGE systems, personal communications, audio/video conferencing and wideband IP telephony.

This G.722.2 vocoder provides both full and half duplex modes of operation and operates at rates of 6.6 kb/s to 23.85 kb/s. By utilizing a wide-band of 50 Hz to 7 kHz, GAO's G.722.2 algorithm provides higher-than-toll quality speech. Both the IP network and the 3G network use the same codec which provides seamless interoperability.

V.32bis/V.32 Modem Software

Toronto, Canada - March 3rd, 2011 - GAO Research Inc.(www.GAOResearch.com) recommends its V.32bis/V.32 Modem Software. This software provides full duplex mode of operation at data signaling rates of up to 14400 bps for use on the general switched telephone network and on leased point-to-point 2 wire telephone-type circuits. The V.32bis/V.32 modem is designed to process data in 10 ms intervals and can be adapted for a variety of sampling rates such as 9600 Hz or 7200 Hz.

This V.32bis/V.32 modem software provides channel separation using echo cancellation techniques. QAM is used as the modulation scheme providing synchronous line transmission at 2400 baud. Its frequency carrier operates at 1800Hz with V.2 transmitted power level. The V.32bis/V.32 modem software provides exchange of rate sequences during start-up to establish the data-rate, coding and any other special facilities. The V.32bis trellis coding rates are from 7200 bps to 14000 bps; for V.32, two alternative modulation techniques are used for a signaling rate of 960 0bps. One uses 16 carrier states and one uses trellis coding with 32 carrier states. In addition, the software is available for commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs and operates under such operating systems as Windows, VxWorks, and Linux.

T.30 and T.30E Fax Control Protocol Software

Toronto, Canada - February 28th, 2011 - GAO Research Inc.(www.GAOResearch.com) has released an updated to its T.30 series of fax control protocol software including T.30 software and T.30E. T.30 software implementing ITU-T T.30 recommendation is procedure for document facsimile transmission in general switched telephone networks. It is targeted for fax applications as a fax handshaking protocol and establishes and manages communications between two fax modems. There are five phases of operation covering call set up, pre message procedure (selecting the communication mode), message transmission (including phasing and synchronization), post message procedure and call release. T.30E software implements the procedure for Group 3 (G3 fax) document fax transmission of continuous-tone color images. T.30E enables the efficient transmission of high quality, full color and gray-scale images over general switched telephone networks and other networks.

The embedded fax software has been integrated and tested with fax data pumps that provide interfaces to PCM data. The fax software is compatible with commonly used processors such as TI C5000 and C6000 series DSPs, ARM processors and ADI DSPs and operates under such operating systems as Windows, VxWorks, and Linux.

Complete SIP-based T.38 Fax over IP Solution

Toronto, Canada - January 12, 2011 - GAO Research Inc.(www.GAOResearch.com) a leading provider of embedded telecommunication software, and TeleSoft International Inc.(www.telesoft-intl.com) a premier developer and supplier of telecom and datacom protocol stacks jointly introduce GT-T38, an all-in-one SIP-based T.38 Fax over IP embedded software solution. The GT-T38 enables an end-to-end T.38 fax session over the SIP/SDP protocol, capable of powering T.38 end-points, gateways, and relays. The all-inclusive software solution includes T.38 Real-time Internet Fax Processing, T.30 Fax Control Protocol, T.4/T.6 and TIFF image processing, complete with SIP/SDP protocol with T.38 Annex D extensions, and RTP.

The GT-T38 is a fully optimized, integrated software solution between GAO's field proven T.38 embedded FoIP software and TeleSoft's proven CompactSIP protocol stack. GAO's T.38 interfaces with TeleSoft's SDP protocol to initiate a T.38 fax session using SIP + SDP according to T.38 Annex D. TeleSoft's SIP + SDP stack manages the IP fax session while GAO's T.38 handles all fax data and image processing. This complete SIP T.38 solution allows rapid deployment of fax over IP gateways, relays, and Internet aware fax devices by manufacturers, greatly reducing their R&D effort and time to market while minimizing technical risk.

"By integrating renowned and field-proven technologies from both companies, GAO and TeleSoft are able to offer the industry the best-of-breed, most complete embedded fax over IP software solution available," said Dr. Frank Gao, president of GAO Research Inc. "We continue to see growth in the fax over IP market, and we strive to help developers and manufacturers reduce their time to market by using our complete, off-the-shelf ready solution."

"As the FoIP market accelerates, developers and manufacturers are realizing that two of the most important factors determining success are fax quality, transmission efficiency and time to market," said Charlie Crowe, President of TeleSoft International. "GAO Research's T.38 Fax Relay software combined with TeleSoft's CompactSIP software set the standard in providing the best quality integrated FoIP solution and we are delighted to be working with them."

The GT-T38 software provides the following features:

V.34 Fax Modem Software

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) has announced a new release of its V.34 fax modem software which provides adaptive signalling through line probing by adjusting to channel quality and capacity. It is the standard for fax modems of up to 33,600bps.

This high performance V.34 fax modem software operates over twisted pair, point-to-point circuits and on dial-up or leased circuits. One of the most significant characters of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel. Unlike lower speed modem standards where nominal bandwidth was set using a fixed carrier frequency, both the bandwidth and carrier frequencies are adaptive in V.34. The V.34 fax modem supports data signalling rates from 2.4kbps to 33.6kbps. It incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower speed V.series modems to make the best use of available conditions. Trellis coding and shell mapping provide this modem with a robust design for heavily impaired channels.

V.22bis/V.22 Modem Software

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) has announced the availability of its V.22bis & V.22 modem software, which implements the ITU-T standards for 1200bps and 2400bps full-duplex data communication on the GSTN and on point-to-point two-wire leased line circuits. It uses minimal memory and MIPS and doesn't require a high quality, high cost DDA or Codec. The modem software is deployable on processors such as TI C5000 and C6000 DSPs, ARM processors as well as many other DSPs and microprocessors. It runs under all major RTOS including Windows, Linux, ITRON, VxWorks and pSOS.

The software is rigorously tested for standards compliance using TAS, Consultronics, Rochelle, Advent and Telegra equipment under various channel models according to the relevant ITU or TIA, EIA, BellCore, and Mitel standards. It has also been tested against various impairment combinations using TAS Telephone Network Emulator. The softmodemsuse frequency division for channel separation and each channel is phase shift modulated. A symbol rate of 600 carries 2bits per symbol at a rate of 1200bps for V.22. For V.22bis, each channel is quadrature amplitude modulated (QAM) to carry 4bits per symbol at 600 symbols per second at a rate of 2400bps. In addition, carrier frequencies are 1200Hz and 2400Hz respectively for the low and high channels.

G.726 Vocoder Suited for Numerous Applications

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) recommends its high performance G.726 vocoder which was introduced to replace both G.721 ADPCM at 32kbit/s and G.723 ADPCM for 24 and 40kbit/s. It is commonly used in applications such as speech transmission over digital networks, video conferencing, multimedia and ISDN communications.

This vocoder, model G.726, adheres to the ITU-T standard. It encodes 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀-law encoded data into 2, 3, 4, or 5-bit code words. All GAO Research¡¯s speech software have passed the test vectors specified by the ITU. GAO also follows stringent quality control procedures, which is reflected in its well structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration, easy maintenance and a smooth upgrade path for further generation customer products.

ITU-T G.723.1 Compliant Vocoder Now Available

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) recommends its latest release of its ITU-T G.723.1 compliant vocoder which performs compression and decompression of 8kHz speech signals. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for the 5.3Kbps and 6.3Kbps channels respectively, as well as speech or other audio signals. The vocoder has a switchable transmission rate over 5.3Kbps or 6.3Kbps channels providing 4kHz of quality speech bandwidth. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU standard specifies the coded representation that is used for compressing signal components for multimedia services at a very low bit rate as a part of the overall H.324 family of standards. The excitation signals for the high rate coder is Multipulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP). This coder was optimized to output high quality speech at the above rates with simple operations. Voice activity detection (VAD) and comfort noise generation (CNG), which are specified in Annex A, are included in this version. It is commonly used for applications such as video phones, audio/video conferencing and media gateways.

Highly Optimized V.27ter Fax Modem Software

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) is offering its V.27ter fax modem software which is commonly used in general switched telephone networks. This fax modem software can also be integrated with other GAO data modems, telephony, speech compression, and fax relay solutions for use in various applications.

This V.27ter fax modem software is written in highly optimized C channel and is multi-channel ready. It implements the ITU-T V.27ter recommendation and uses the Group 3 facsimile (G3 fax) modulation scheme for fax image transfer at the rate of 4800bps and 2400bps. This software can operate in a multi-tasking environment and is optimized for fixed-point arithmetic. It consists of transmitting and receiving functions which transmit and receive bits in groups of 2 or 3 at a rate of 1200 or 1600 symbols per second respectively. Additionally, optional backward channel modulation rate is up to 75 symbols per second.

Half-duplex Mode V.17 Fax Modem Software

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) recommends its V.17 Fax Modem software, which implements the ITU-T V.17 recommendation for a two-wire modem for facsimile applications with data rates up to 14,400bps. QAM is used as the modulation scheme providing synchronous line transmission at 2400 baud.

This V.17 soft fax modem solution operates within a multi-tasking environment or as a stand-alone application and is optimized for fixed-point arithmetic. It features half-duplex mode of operation supporting V.24 interchange circuits, and its frequency carrier operates at 1800Hz with V.2 transmitted power level. The V.17 fax software provides exchange of rate sequences during start-up to establish the data-rate, coding, and any other special facilities. Its trellis coding rates are from 7200 to 14000bps. The embedded fax software is compatible with commonly used processors such as TI C5000 and C6000 series DSPs, ARM processors and ADI DSPs and operates under such operating systems as Windows, VxWorks, and Linux.

A New Release of V.34 Fax Modem Software

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) has announced a new release of its V.34 fax modem software, which provides adaptive signalling through line probing by adjusting to channel quality and capacity. It is the standard for fax modems of up to 33,600bps.

This high performance V.34 fax modem software operates over twisted pair, point-to-point circuits and on dial-up or leased circuits. One of the most significant characters of the software is its use of increased bit rates to utilize maximum bandwidth permitted by the channel. Unlike lower speed modem standards where nominal bandwidth was set using a fixed carrier frequency, both the bandwidth and carrier frequencies are adaptive in V.34. The V.34 fax modem supports data signalling rates from 2.4kbps to 33.6kbps. It incorporates a higher level of optional capabilities, intelligence, and adaptability than the lower speed V.series modems to make the best use of available conditions. Trellis coding and shell mapping provide this modem with a robust design for heavily impaired channels.

ITU-T G.723.1 Compliant Vocoder Now Available

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) recommends its latest release of its ITU-T G.723.1 compliant vocoder which performs compression and decompression of 8kHz speech signals. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for the 5.3Kbps and 6.3Kbps channels respectively, as well as speech or other audio signals. The vocoder has a switchable transmission rate over 5.3Kbps or 6.3Kbps channels providing 4kHz of quality speech bandwidth. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU standard specifies the coded representation that is used for compressing signal components for multimedia services at a very low bit rate as a part of the overall H.324 family of standards. The excitation signals for the high rate coder is Multipulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP). This coder was optimized to output high quality speech at the above rates with simple operations. Voice activity detection (VAD) and comfort noise generation (CNG), which are specified in Annex A, are included in this version. It is commonly used for applications such as video phones, audio/video conferencing and media gateways.

G.729, G.729A and G.729AB Speech Vocoders

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) has released its enhanced G.729 vocoders which provide toll-quality speech with only moderate processing requirements and delay times. They perform well in the presence of random bit errors. These speech vocoders, G.729 and G.729A/B, are commonly used in visual telephony, wireless communications, and digital satellite communication systems.

Each of the vocoders offer easy integration into other systems, minimal software maintenance and a smooth upgrade path for next-generation customer products. They compress 8kHz CODEC or linear audio data to 8kbps. These vocoders operate on 10ms frames with short algorithmic delays and deliver toll quality speech. The implementation of these vocoders pass all ITU-T test vectors.

G.726 Vocoder Suited for Numerous Applications

Toronto, Canada - GAO Research Inc.(www.GAOResearch.com) recommends its high performance G.726 vocoder which was introduced to replace both G.721 ADPCM at 32kbit/s and G.723 ADPCM for 24 and 40kbit/s. It is commonly used in applications such as speech transmission over digital networks, video conferencing, multimedia and ISDN communications.

This vocoder, model G.726, adheres to the ITU-T standard. It encodes 13 or 14-bit PCM samples or 8-bit, A-law or ¦̀-law encoded data into 2, 3, 4, or 5-bit code words. All GAO Research¡¯s speech software have passed the test vectors specified by the ITU. GAO also follows stringent quality control procedures, which is reflected in its well structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration, easy maintenance and a smooth upgrade path for further generation customer products.

High Performance G.728 Vocoder Implements LD-CELP

Toronto, Canada - GAO Research Inc. (www.GAOResearch.com) recommends its G.728 vocoder offering approximately 4kHz speech bandwidth. It implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard. This software is well-suited for embedded applications in digital circuit multiplication equipment, videoconferencing, digital telephony, and multimedia products. The software encodes 5 sample frames of 16-bit linear PCM data into 10-bit code words and employs backward-adaptive linear predictive coding analysis to achieve a low transcoding delay. It uses backward adaptation of predictors and gains to achieve an algorithmic delay of only 0.625ms. The ITU-T G.728 standard specifies the encoding of 8kHz sampled speech signals for transmission over a 16kbps channel. The vocoder runs on most commercially available DSPs/microprocessors and under most popular real time operating systems.

Acoustic Echo Cancellation (AEC) Software

Toronto, Canada - GAO Research Inc. (www.GAOResearch.com) is offering its Acoustic Echo Cancellation (AEC) software which complies with ITU-T G.167 standard. It can run on most commercially available DSPs/microprocessors and most popular real time operating systems. The software is implemented in assembly or C and has user-callable functions. It can be easily integrated with applications in standard or cell phones, teleconferencing systems, hands-free car phone products or hospital patient care systems. The software features low data memory, program memory and computational requirements. Its robust design delivers consistent results. In addition, it executes double-talk detection, high performance full duplex operation and automatic gain control.

ITU-T G.723.1 Compliant Vocoder Now Available

Toronto, Canada - GAO Research Inc. (www.GAOResearch.com) recommends its latest enhanced ITU-T G.723.1 compliant vocoder which performs compression and decompression of 8kHz speech signals. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for the 5.3Kbps and 6.3Kbps channels respectively. This vocoder also encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding. It has switchable transmission rates over 5.3Kbps or 6.3Kbps channels providing 4kHz of quality speech bandwidth. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU-T G.723.1 standard specifies a coded representation that can be used for compressing the speech or other audio signal component of multimedia services at a very low bit rate as part of the overall H.324 family of standards. This coder was optimized to represent high quality speech at the above rates using a limited amount of complexity. The excitation signal for the high rate coder is Multipulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP). Voice activity detection (VAD) and comfort noise generation (CNG), which are specified in Annex A, are also included in this version. This vocoder is available for applications such as video phones, audio/video conferencing, media gateways.

Acoustic Echo Cancellation (AEC) Software Now Available

Toronto, Canada - GAO Research Inc. (www.GAOResearch.com) has rolled out a better performance Acoustic Echo Cancellation (AEC) software. This AEC software complies to ITU-T G.167 standard. It is implemented in assembly or C and has user-callable functions. It supports robust double-talk detection, high performance full duplex operation and automatic gain control. The software features low data memory, program memory and computational requirements. Its robust design delivers consistent results. It can be easily integrated with applications as standard phone or cell phone in hands-free mode, teleconferencing systems, hands-free car phone products, hospital patient care systems, etc. The AEC software can be run on most commercially available DSPs/microprocessors and most popular real time operating systems.

Upgraded Fax Modem Software Implements ITU-T V.29 Recommendations

Toronto, Canada - GAO Research Inc. (www.GAOResearch.com) has recently updated its fax modem software supporting commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs and OS such as Windows and Linux. It implements the ITU-T V.29 Recommendation, which provides full-duplex data transmission at rates of 9600, 7200, and 4800bps over four-wire leased lines. The soft modem software is also modulation technique used in Group 3 fax for fax data transfer at 9600bps and 7200bps on 2-wire lines. It consists of transmitting functions and receiving functions which are called to transmit/receive bits in groups of 2 or 3 at rates of 1200 or 1600 symbols per second respectively.

GAO Research's V.29 modem data pump software operates in either half or full duplex modes and has a "quick connect" feature. It uses amplitude and phase modulation for synchronous transmission. The V.29 soft fax modem solution operates within a multi-tasking environment or as a stand-alone task and is optimized for fixed-point arithmetic. It can be integrated with other data modems, telephony, speech compression, and fax relay solutions for use in various applications.

All GAO's software are subject to the most stringent quality control procedures, which is reflected in its well structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration into the user's system, easy maintenance, and a smooth upgrade path for next-generation products.

GAO Research Inc.'s Software Modem Replaces Chipset in CEIVA's Connected Digital Photo Frame

Toronto, Canada –– GAO Research Inc. (www.gaoresearch.com), a leading provider of embedded communication software, announced today that it has licensed its embedded modem software solution to CEIVA Logic Inc. (www.ceiva.com) for use in its patented connected digital photo frame.

In order to provide connectivity for the device's automatic online photo updates, the suite of GAO modules chosen by CEIVA includes ITU-T standards V.34 compliant softmodem, V.42 error correction software, as well as various telephony modules and Linux drivers. The software allows the digital photo frame to be plugged into an existing phone line and silently dial a local number each night to pick up or send new photos, without interruption to one's phone service, and without charges to the line.

"This is a typical scenario we encounter with many of our customers," said Dr. Frank Gao, president of GAO Research Inc. “By replacing the modem chipset in their design with GAO's highly optimized software solution, CEIVA is able to achieve significant cost savings."

Jim Sepe, Chief Technology Officer, at CEIVA logic said, "When CEIVA decided to upgrade our connected digital photo frames and switch from a hardware to a software based solution, we needed to ensure we retained functionality and remained highly competitive. Our choice of GAO’s software modem solution allowed us to do both." Sepe also commented that, “CEIVA is very pleased with the results. The optimization and performance of GAO software far exceeded our expectations and their after sales support is excellent.?/p>

GAO’s embedded soft-modem and fax packages include a full range of ITU-T compliant modem and fax data pumps and protocols. Modem data pumps include V.92, V.90, V.34, V.32bis/V.32, V.22bis/V.22, V.21, and other standards. Fax data pumps include V.34, V.17, V.29, V.27ter, and V.21 ch.2. GAO’s embedded modem and fax software are fully optimized to run on DSPs and microprocessor platforms including Texas Instruments C5000 and C6000 series, Analog Devices ADSP 218x and Blackfin, ARM7, ARM9/E, and Pentium among others.

About GAO Research Inc.
GAO Research Inc., www.gaoresearch.com, is the market-leader in embedded communication software products for DSP & Microprocessor environments, and one of the fastest growing companies in Canada. GAO’s embedded communications modules are used by telecommunications, semiconductor, and electronics manufacturers worldwide. GAO offers its VoIP & FoIP modules, V.92 & V.90 with all fallback soft-modems, Super G3 & G3 fax software and G.7xx speech codecs on the broadest range of DSPs and microprocessors. GAO’s customers include CEIVA, Motorola, Samsung, Alcatel, Philips, Telular, Telcordia, OKI, Marconi, Agilent, Siemens, Infineon, AudioCodes, ABB, LG Electronics, Toshiba and other global customers.

About CEIVA Logic, Inc.:
CEIVA Logic, Inc., www.ceiva.com, is the inventor of the digital photo frame and the provider of the world’s first and only connected Digital Photo Frames? CEIVA enables families and friends to display endless slideshows from camera memory cards via the frames built-in card reader and automatically receive photos sent by camera phone or through an online CEIVA account. Offering world-class personalized customer care, CEIVA Digital Photo Frames and the CEIVA PicturePlan?service is the only digital photo solution to allow effortless display, secure storage and sharing of digital photos. CEIVA products are available at ceiva.com and at select retailers nationwide.

Softmodem from GAO Research Inc. Replaces Modem Chipset in Telular’s Fixed Cellular Terminal Designs

Toronto, Canada ?GAO Research Inc., (www.gaoresearch.com) a leading provider of embedded communication software, is supplying its suite of modem, fax, and telephony software to power the next generation of Telular Corporation’s (www.telular.com) Fixed Cellular Terminals (FCTs). Telular selected GAO’s modem and fax software, including V.90 soft modem technology, which provides downstream speeds of up to 56 kbps, and V.17 fax with a bit-rate of up to 14.4 kbps.

Telular’s wireless terminals are further enabled through GAO’s caller-ID, DTMF, call progress, and G.168 line echo cancellation software. By replacing their chipset-based fax and data modems with GAO’s DSP-based software solutions, Telular is able to achieve significant cost savings and reduce product PCB size, while facilitating easy upgrades for their new Fixed Wireless Terminal products.

Telular’s Fixed Cellular Terminals enable wireless connectivity for standard telephones, fax machines, and computer equipment across a wide range of applications. From mobile users not adequately served by cellular handsets to rapid cellular service deployment, Fixed Cellular Terminals from Telular provide voice, fax, and data transmission with superior reception using existing cellular network technologies

"Our optimized modem software uses minimal footprint, which reserves DSP resources for other memory intensive applications "said Dr. Frank Gao, president of GAO Research Inc.?This has allowed Telular to drop their original solution that employed a modem chipset, and has now implemented modem functions directly on a Texas Instruments C5502 DSP. Our embedded communication subsystems allow for functional upgrades through software, which ensure quick design turnaround and performance improvements, while achieving a reduction in volume manufacturing costs."

"After careful consideration we selected GAO Research as our provider because of their experience, their leading product portfolio in the embedded communication software market, and their strong reputation for quality and support," said Daniel Giacopelli, Executive Vice President and Chief Technology Officer at Telular Corporation. "Not only were we able to reduce the overall cost and PCB size by replacing the fax and modem hardware with GAO’s software, but by utilizing GAO’s solutions we had enough remaining DSP resources for GAO to port the remaining control functions from the existing host processor to the more economical DSP. This eliminates the need for a host processor altogether and further reduces hardware costs and circuit size all which will prove beneficial to our customers. The level of optimization and performance of GAO software has far exceeded our expectations."

GAO’s embedded soft-modem and fax packages includes a full range of ITU-T compliant modem and fax data pumps and protocols. Modem data pumps include V.92, V.90, V.34, V.32bis/V.32, V.22bis/V.22, V.21, and other standards. Fax data pumps include V.17, V.29, V.27ter, V.21 ch.2. GAO’s embedded modem and fax software are fully optimized to run on DSPs and microprocessor platforms including Texas Instruments C5000 and C6000 series, Analog Devices ADSP 218x and Blackfin, ARM7, ARM9 , and Intel XScale and Pentium among others.

About GAO Research Inc.

GAO Research Inc. is the market-leader in embedded communication software products for DSP & Microprocessor environments, and one of the fastest growing companies in Canada. GAO ’s embedded communications modules are used by telecommunications, semiconductor, and electronics manufacturers worldwide. GAO offers its VoIP & FoIP modules, V.92 & V.90 with all fallback soft-modems, Super G3 & G3 fax software and G.7xx speech codecs on the broadest range of DSPs and microprocessors. GAO’s customers include Motorola, Lucent, Alcatel, Qualcomm, Philips, Terayon, Telcordia, OKI, Marconi, Siemens, Infineon, Mitsubishi, Intercom, LG Electronics, Toshiba and other global customers.

About Telular Corporation:

Telular Corporation, the global leader in the cellular fixed wireless telecommunications industry, designs, develops, manufactures and markets Cellular Fixed Wireless Terminal (FWT) products that enable a standard telephone, fax, computer modem or security alarm system to operate wirelessly over the cellular network for either primary or back-up communications. Based on its proprietary RJ-11-to-Cellular interface technologies, Telular provides the capability to bridge landline telephone equipment with cellular-type transceivers used in wireless communication networks in the cellular and PCS bands. Telular Corporation has been a publicly held company since 1994. Its stock is traded on the NASDAQ exchange under the symbol "WRLS."

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GAO V.92 Soft Modem Powers State-of-the-art Video Phone

Toronto, Canada ?GAO Research Inc.,(www.gaoresearch.com) a leading provider of embedded communication software, has supplied its V.92 modem software to power a new, state-of-the-art video phone as part of a large-scale migration towards Voice over IP by a leading Telecommunications Service Provider (currently under NDA) operating in over 15 countries. Connecting at speeds of up to 56 kbps, GAO's V.92 modem provides the high-speed connection required for simultaneous real-time video and speech, without the use of expensive broadband networks. The collaborative integration efforts between GAO Research Inc., and GAO's embedded design service partners, resulted in unprecedented real-time video and speech quality over PSTN. The cutting-edge videophone is now slated for wide deployment in many parts of the world. The phone is available as two designs: One with TI's C64xx DSP core (including DM64x with video support) as well as another version for Intel's Xscale. Both versions include GAO's v.92 softmodem supported on the TI and Intel architecture.

"We are extremely pleased to have our modem software integrated into these new video phone designs intended for global deployment,?said Dr. Frank Gao, President of GAO Research Inc. “The lack of a broadband network is still a bottleneck for the evolution of multimedia telecommunications to the general public in many countries. Our high performance V.92 modem takes advantage of ubiquitous and affordable POTS lines. Modem software and optimization has always been at the core of our research and development, and this expertise came through for our Telecom Service Provider customer during this project. The performance of this video phone has surpassed the expectations of many of its end-users."

GAO's softmodems have driven profitability and significantly lowered volume manufacturing costs for its OEM customers without compromising on performance. GAO makes this possible through its long standing DSP and microprocessor code optimization expertise leading to efficient, small-footprint data pump code.

The ITU-T V.92 standard employs pulse code modulation (PCM) in the upstream direction, supplying a data rate of up to 48 kbps; a significant improvement over V.90. The earlier V.90 standard uses the same upstream modulation as V.34 for a limited speed of 33.6 kbps. This improvement proves most useful in applications that involve large data transfers from user to ISP, such as VoIP. GAO's V.92 soft modem features include Modem-on-Hold, and quicker connection time over previous standards, achieved through faster handshaking. Connection time for V.92 is up to 50% quicker than V.90 for buffered connections.

GAO's V.92 Soft Modem Features:

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All trademarks and brand names mentioned are the property of their respective owners.


GAO Research G.729AB Real-time Evaluation now Available Online

Toronto, Canada ?GAO Research Inc., (www.gaoresearch.com) a leading provider of embedded communication software, released an online demo of its G.729AB codec, available at http://www.gaoresearch.com/products/speechsoftware/other/g729.php. This real-time demo allows customers to sample the high fidelity of GAO's G.729AB algorithm. Users may supply their own WAV file, and can adjust simulation parameters such as network jitter and packet loss. GAO's G.729AB vocoder is off-the-shelf available and fully optimized for popular platforms that support Microsoft's WinCE and WinCE.Net such as ARM9, Intel's Xscale and Pentium processors and TI's OMAP among others.

“Today's VoIP devices all support the ITU-T G.729AB codec, making it the most sought after speech processing algorithm by our customers.?said Dr. Frank Gao, president of GAO Research Inc. “Customers always demand to sample the quality of a voice codec before they make the purchase. We want to present a convenient method for our customers to accurately evaluate the fidelity of our codec under simulated network conditions. Customers can expect very similar results when our algorithm is implemented on their system.?/p>

GAO's G.729AB codec is based on the Code Excited Linear Prediction Model (CELP) and Conjugate-Structure Algebraic CELP (CS-ACELP). Some applications for GAO's G.729AB vocoder include visual telephony, wireless communications, and digital satellite communication systems. The G.729A ITU-T standard for voice coding compresses 8 kHz linear audio signals and encodes them for transmission at 8 Kbps with reduced complexity compared to G.729. The ITU-T G.729B & G.729AB standard is a silence compression scheme for G.729 & G.729A, optimized for terminals conforming to Recommendation V.70.

GAO's G.729AB Voice Codec Features:

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GAO Research Enhances Its T.38 Fax Relay Software

Toronto, Canada ?GAO Research Inc., (www.gaoresearch.com) a leading provider of embedded communication software, upgrades its T.38 Fax Relay software. The new version will not only support Group 3 fax, it will also support V.34 Super G3 fax. It is optimized for multi-channel support on a single DSP. In addition to TCP and UDP, support for RTP/UDP has been added to the new version, and it also features a new "spoofing" function to prevent jitter, delay or lost packets. These new features permit the implementation of GAO's T.38 software in a wider range of IP fax products, making GAO's T.38 the most attractive in the embedded communications market.

"One of the fundamental reasons businesses look to implement real-time fax-over-IP is to consolidate their voice, fax, and data traffic onto their existing IP network,?said Dr. Frank Gao, president of GAO Research Inc. "As communication devices migrate toward the packet based environment, customers will require a fax-over-IP solution to complete their communications infrastructure. GAO's T.38 software offers the complete set of functions required by fax-over-IP systems, which enables our customers to significantly reduce their R&D efforts.?br />
GAO's T.38 fax relay software provides the following functions:


GAO Releases Comprehensive VFoIP Software Solution

Toronto, Canada - GAO Research Inc., a leading provider of embedded communication software, today announced the launch of its packaged Voice & Fax over IP (VFoIP) embedded software solution. GAO's VFoIP solution includes comprehensive software modules for voice and fax processing, packet data transmission and control, ITU-T H.323, SIP, MGCP, RTP, and RTCP protocol stacks. GAO's VFoIP solution incorporates all aspects of a VFoIP system, offering its customers the advantage of launching new VFoIP products with minimal in-house development work, thus shortening the always critical time to market factor. Products that customers can deploy by using GAO's VFoIP software solution include stand-alone IP phones, VoIP PBXs, VoIP Gateways, and Fax over IP applications.

"As the IP Telephony market continues to prosper, we're seeing a huge demand for voice and fax over IP software," said Dr. Frank Gao, president of GAO Research Inc. "There is an upward trend where, instead of doing in-house research and development, companies are acquiring embedded VoIP software solutions from outside vendors, and then integrating with target hardware platforms to produce their voice and fax over IP products. GAO VFoIP Software Solution offers all the functions required by a voice and fax over IP system, enabling our customers to significantly reduce their integration efforts, time to market, and capital expenditures."GAO's VFoIP Software Solution supports H.323, SIP, MGCP, RTP, RTCP protocols, voice compression using GAO's G.7xx speech codecs, and voice processing software such as call discrimination, echo cancellation, voice activity detection, comfort noise generation, DTMF tone detection and generation, and automatic gain control. Fax over IP capability is also provided using T.38 fax protocol. Packet data transmission and control is achieved with lost packet detection and reconstruction, jitter buffer management and sequencing, and a suite of packet protocols.


GAO Research Announces V.92 Modem Software Avaliable on Windows CE .NET

GAO Research, a Microsoft Windows Embedded Partner and leading supplier of embedded communication software has announced that its V.92 modem software is now available to run under Microsoft's Windows CE. V.92 technology improves on V.90 in three ways: supplies a higher upstream data rate of up to 48 kbps, shortens the connection time by 50%, and has the ability to temporarily put the 'Modem On Hold' (MOH) allowing users to receive a phone call without having to disconnect from their Internet session. Integrating GAO's products with Microsoft's Windows CE .NET elevates the collaborative efforts of both companies to a wide range of offerings for OEMs looking to shorten their time to market and develop their digital and mobile products based on the latest embedded technology.


DSP Group and GAO Research Announce V.90 Modem for OKI Electric Industry

TORONTO, Canada and SANTA CLARA, California - GAO Research, world leading supplier of embedded communication software, and DSP Group, Inc. (Nasdaq: DSPG), the world leader in the development and licensing of Digital Signal Processor (DSP) cores announced today that Oki Electric Industry Co., Ltd., of Japan has licensed GAO's V.90 (56k) modem software as well as the software to allow fallbacks to all lower speed modems which are designed for use with DSP Group's Teak?DSP Core. Oki is an existing Teak and TeakLite?licensee and GAO has already implemented several algorithms using DSP Group's Teak and TeakLite DSP Cores.

GAO's communications industry expertise has been established through its product line that includes software for voice band modems, broadband DSL modems, fax, fax relay, fax over IP, telephony, voice, voice over IP, and voice over DSL gateways. Developing GAO's products using DSP Group's Teak DSP Core elevates the collaborative efforts of both companies to a range of offerings for OEMs looking to shorten their time to market with DSP-based system-on-a-chip solutions for many of their digital devices.

"After careful consideration, we concluded that the combination of GAO's software modems with DSP Group's Teak processor was the best, most robust solution for our chipset product," says Hiroshi Kume, Senior Manager with Oki's LSI division. "The product has a minimal footprint and requires only a nominal amount of power while remaining superior to, and more adaptable than, a traditional chipset." Oki Electric Industry Co., Ltd. is Japan's first telecommunications manufacturer.

"Both GAO and DSP Group have long recognized the tremendous possibilities in the union of software-based communication solutions and powerful DSPs," says Dr. Frank Gao, CEO of GAO Research. "Currently, our entire suite of modems as well as some of our other software is available for DSP Group's family of cores. We are moving to offer all of our communications products for these DSPs."

"Our collaboration with GAO Research to provide modem solutions to our licensees illustrates the solid business relationships that DSP Group is building throughout the DSP IP market," says Bat-Sheva Ovadia, vice president of marketing and business development for DSP Group's Technology Licensing Division. "The SmartCores series continues to satisfy OEM's demand for powerful, open-architecture DSP IP platforms on which they can create value-added chipset solutions."

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GAO Announces Release of V.92 Softmodem & V.44 Compression Software

Toronto, Canada: GAO Research Inc., the preeminent embedded communications software provider, has announced that it will release V.92 compliant modem software as well as V.44 data compression software by the begining of the next year. This places GAO as the market forerunner for softmodem based on the two new standards recently ratified by the ITU.

Dr. Frank Gao, internationally known DSP expert and CEO of GAO Research, says, "We are very pleased that our customers will benefit from the early avaliability of these software packages. We have always maintained that software solutions offer a faster and more cost-effective upgrade path than fixed-function chip sets do. Since an upgrade by GAO's customer from a V.90 to a V.92 softmodem will not require customers to make significant hardware design changes if any, it will prove to be an inexpensive and effective means for customers to provide extended functionality in their products."

GAO is currently porting its C-coded versions of V.92 and V.44 to a wide variety of DSPs and microprocessors. Dr. Gao adds, "These C and assembly-coded new products add significantly to our modem, telephony, and integrated products extending the capabilities of our access technologies for Internet appliances, VoIP, residential gateway and remote access server packages."

V.92 improves on V.90 in three ways:

V.44, the new data compression software, improves on the existing V.42bis standard by as much as 100%. Depending on the kind of data, compression ratios of 6:1 are attainable with V.44. Full advantage of both standards is realized when GAO's V.92 softmodem is combined with its V.44 yielding greater throughput. For example, with a V.92 upstream connection speed of 48 kbps and 6:1 data compression the data transfer rate becomes 288 kbps. Due to physical limitations, hardware modems that depend on the use of serial ports are often limited to a maximum transfer rate of 115.2 kbps.

"Interest in our V.92 software has been high," says Uwe Lynen, GAO's Vice President of Business Development "Many of our current customers are already looking to upgrade their softmodem-based products to include the higher speed modem. We are committed to providing them with V.92's new features quickly, which is extremely important in this competitive market." With the addition of V.92 softmodem and V.44 data compression software to GAO's growing portfolio of modem, fax, speech and telephony software, GAO will continue to be the leader in serving its customers' needs by providing complete, embedded telecommunications solutions.

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GAO and Beijing Hi-Tech Ink Deal for High-speed Softmodem

Toronto, Canada: GAO Research Inc., the world-leading supplier of communications software, has made a significant breakthrough in the huge Chinese information appliance market with the signing of a contract with Beijing Hi-Tech Wealth Electronic Product Company Ltd., the number one PDA manufacturer in China.

Under this deal, GAO is supplying high-speed modem software that runs on the Intel StrongARM processor. Beijing Hi-Tech Wealth plans to use the software for its Personal Digital Assistants (PDA) in China.

"We are pleased that GAO Research has chosen Intel's StrongARM processors as the platform for their PDA software. We see tremendous potential for Intel StrongARM processor in the Chinese market," said Intel's Tom Yemington, Product Marketing Manager, Handheld Computing Division of Intel.

The embedded modem software from GAO enables PDA users to connect to a phone line and browse the Web or transfer data at high speeds to and from the Internet. "The combination of Intel StrongARM processor and GAO softmodem technology offers a cost-effective, real-estate saving, minimal power consumption, and flexible solution which is far more superior than a chipset for PDA devices," said Steve Yu of Beijing Hi-tech Wealth.

Dr. Frank Gao, CEO of GAO Research, feels that the information appliance market is going to grow explosively over the next few years. "Worldwide, more and more people want the functionality of browsing the net while being mobile. At GAO we have the embedded software technology to enable the change, and we are well-positioned to take advantage of the tremendous opportunity this represents."

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GAO to provide STMicroelectronics with High Speed Modem Solutions

Toronto, Canada: GAO Research Inc. is pleased to announce that it is working with STMicroelectronics to port its V.90 software modem to ST's new range of powerful and cost effective ST40 products which incorporate the 32-bit SuperH, SH-4 CPU core. This extends the existing cooperation between GAO and ST for supplying GAO's modem software on ST's micros for consumer and telecom applications.

"This cooperation demonstrates that both companies recognize the enormous potential of software based modem solutions on powerful microprocessors" said Uwe Lynen, Vice President of Business Development at GAO.

Since the standardization of the 56Kbps V.90 modem was completed in the fall of 1998, it has quickly become the ubiquitous high-speed modem standard not only for the PC, but for Set-top box applications, Internet appliances, and anywhere high-speed communication is required. The V.90 software solution from GAO provides for more flexible feature sets and excellent cost/performance.

"Software V.90 Modems are a key part of our system-on-chip strategy and with the processing power offered by the SH-4 CPU core this an ideal product to take advantage of GAO's expertise in optimized application software." said Mark Jones, Marketing Director, CPU Cores at ST.

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