GAO Releases V.90 Compliant Modem Software
September 30, 1998
Since February 1998, when the draft of the International Telecommunications Union (ITU) V.90 recommendation cleared up the compatibility issues surrounding 56k technology, the V.90 modem has
become the driving force of the modem market. The V.90 standard was ratified by the ITU on September 15th, 1998 with only a few editorial changes from the draft recommendation. GAO Research &
Consulting Ltd. is now releasing a new version of its V.90 modem software, which complies with the ratified standard.
Toronto, Canada: GAO Research & Consulting Ltd., a leading supplier of modem technology, is releasing a new version of its 56k PCM modem software called GAO V.90. GAO V.90 fully complies with
the International Telecommunications Union standard which was ratified September 15, 1998. GAO V.90 is implemented in ANSI C, running as a software modem on a Pentium platform. The licensing fee for
GAO V.90, in C language, is $299,000 US plus running royalties. Several leading communications and electronics companies have recently signed deals to license the software.
GAO Research & Consulting Ltd. is porting GAO V.90 to other platforms including the DSPs of Texas Instruments and Analog Devices, as well as MIPS, ARM and other RISC processors. GAO also
offers software for V.90 modem fallbacks including V.34 and V.32/32bis as well as fax, speech, and ADSL. GAOæŠ¯ software is available in fixed and floating-point C for
microprocessors such as Pentium and ARM, and assembly languages for DSPs such as TMS320C6x/54x and ADSP21xx.
In the months of field experience acquired since the draft V.90 recommendation was released in February 1998, no significant problems with V.90 have been reported by either the users or the
manufacturers. As a result, the ratified version of the V.90 standard incorporates only a few minor changes from the draft of the V.90 recommendation. Such minimal changes have enabled GAO to quickly
release GAO V.90 modem software which fully complies with the ratified standard.
The V.90 technology takes advantage of the fact that digital transmission facilities have been rapidly replacing analog transmission facilities on the Public Switched Telephone Network (PSTN).
Internet service providers are digitally connected both to the Internet and to a telephone company's central office (CO). This means that a conversion from digital to analog lines in the connection
between CO and ISP is avoided, resulting in data rates of up to 56 kbps downstream and 33.6 kbps upstream.