ENHANCED IN-BAND SIGNALING FOR DATA COMMUNICATIONS OVER DIGITAL WIRELESS TELECOMMUNICATIONS NETWORKS

摘要

An inband signaling modem (28) communicates digital data (29) over a voice channel (34) of a wireless telecommunications network (12). An input receives digital data. An encoder (18) converts the digital data (29) into audio tones that synthesize frequency characteristics of human speech (22). The digital data (29) is also encoded to prevent voice encoding circuitry in the telecommunications network (12) from corrupting the synthesized audio tones representing the digital data (29). An output then outputs the synthesized audio tones to a voice channel (34) of a digital wireless telecommunications network (12).