Pre-paid telephone calling card having an associated...
Process for scalable conversation recording
Public notification system and method
Public notification system and method
Radio telephone apparatus having automatic answering function fo
Realcall message delivery system with echo cancellation
Recorder control apparatus for automatic telephone answering sys
Recording system with response categorization
Remote controlling telephone unit for selectively activating one
Remote dictating apparatus
Remote hang-up detector
Remote terminal for use with central dictation apparatus
Remote-control telephone answering system and method
Remote-control telephone answering system and method
Remotely operable telephone answering device and method of...
Reprogrammable call forwarding device
Reset system for telephone answering machine in event of power f
Reset system for telephone answering machine in the event of a p
Ring voice message generating device and method of automatic ans
Saving information from information retrieval systems