GAO's Bell 103 modem software implements the Bell 103 data set for up to 300bps full duplex data communication. This modem operates on two-wire systems using two distinct frequency bands for frequency modulation. This is a split channel modem, like the ITU-T V.21, which uses different frequencies. GAO's Bell 103 softmodem can either originate or answer calls and can be used with a direct connection or by acoustic coupler.
For examples of GAO's Modem Software Architecture, click GAO's Modem Software Architecture.
For a complete list of GAO's Modem Software products, please see GAO's Softmodem List.