Elevator car modem with transhybrid rejection

Emergency interrupt technique

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