Equipment for sending digitally pre-stored voice...
Equipment to coordinate establishment of audio and video...
Error correction for dtmf corruption on uplink
Error detection recording technique
Escape sequence using monitoring of control signal states
Establishing a connection using a hybrid receiver
Establishing calls and processing on-going calls in fixed...
Even/odd/repeat address counter
Event detector for headsets
Event monitoring transceiver
Event monitoring transceiver
Event monitoring transceiver
Event monitoring transceiver
Ever ready telephonic answering machine for receiving and...
Exchange and use of globally unique device identifiers for...
Exchange for an isdn capable of controlling an incoming call...
Exchange having a display apparatus for displaying calls...
Exchange system
Exchange system having originating call restriction function
Exchange system, and method for providing maintenance...