Digital dictation system with voice mail capability
Digital secretary
Digital telephone answering set
Directory answering machine
Directory management system and method
Distributed control and storage for a large capacity messaging s
Distributed system for call processing
Distributed system for call processing
DOS compatible dictation and voice mail system
DTMF signal detection apparatus
Electric power measuring instrument with speech synthesis featur
Electronic apparatus for "Hands off" control of a voice mail sys
Electronic audio communications system with versatile user acces
Electronic audio communications system with voice authentication
Electronic audio communications system with voice command featur
Electronic audio communications systems network
Electronic mail system having integrated voice messages
Electronic mail system having integrated voice messages
Electronic switch connected to intelligent peripheral while perm
Enhanced message service indication