Data communication apparatus

Data communication apparatus and method capable of discriminatin

Data communication apparatus and method for performing noiseless

Data communication apparatus connectable with a plurality of tel

Data communication apparatus coupled to two telephone lines

Data communication apparatus for data and/or speech communicatio

Data communication apparatus for maintaining data integrity duri

Data communication apparatus having an auto-dialing function

Data communication over telephone voice channel using DTMF...

Data communication process suitable for use in a quiet environme

Data communication system between a personal computer and facsim

Data communication system for supplementing telephone calls

Data communications system for establishing links between subscr

Data dial system and method

Data interface apparatus and method

Data interface circuit for portable terminal equipment

Data interface for telephone system

Data link for multi-player game system using telephone lines

Data message storage and pick up service

Data processing system having a programmable modem and method th