Data communication apparatus having an auto-calling function

Data communication apparatus having an auto-dialing function

Data communication apparatus having the function of automaticall

Data communication apparatus which can selectively store data or

Data communication apparatus which can use either an analog or a

Data communication apparatus with an abbreviated dial key having

Data communication apparatus with interrupt completion detecting

Data communication device and data communication method

Data communication over telephone voice channel using DTMF...

Data communication process suitable for use in a quiet environme

Data communication system and apparatus for transmitting data on

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