GAO's Bell 212A softmodem implements the Bell 212A data set for up to 1200bps full duplex data communication. It functions asynchronously, utilizing PSK modulation for its 1200bps mode of operation and FSK technique for its 300bps mode of operation. It can also function as a synchronous device in the 1200bps range, and is interoperable with the GAO Bell 103 softmodem. It also supports either manual originate/answer or automatic answer.
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.