Enabling and powering of remotely actuated bypass splitters
Enabling incoming VoIP calls behind a network firewall
Enabling legacy interactive voice response units to accept...
Ensemble modem structure for imperfect transmission media
Ensemble modem structure for imperfect transmission media
Ensemble modem structure for imperfect transmission media
Entrance communication system
Entry of alphabetical characters into a telephone system using a
Error correction and compression parameter exchange during...
Escape sequence using monitoring of control signal states
Ever ready telephonic answering-machine for receiving and delive
Exchange for an ISDN capable of controlling an incoming call by
Expansion subsystem for use in a communication system
External device interface for an electronic telephone
Facsimile apparatus adapted to communicate via an acoustic coupl
Facsimile apparatus with a mode for receiving non-image informat
Facsimile security system
Facsimile system of distinctive ringing type capable of automati
Facsimile/voice phone combined device producing DTMF oscillation
Faster modem method and apparatus