Message delivery system with echo-cancellation

Message exchange device for communication between a manager and

Message length reporting system for telephone communication syst

Message playback control system for telephone answering machine

Method and apparatus for activating through phone telecommand an

Method and apparatus for answering machine detection in...

Method and apparatus for camp-on service control

Method and apparatus for combining ambient sound effects to...

Method and apparatus for generating default personal...

Method and apparatus for human-assisted adaptive outbound...

Method and apparatus for intercept of wireline communications

Method and apparatus for intercept of wireline communications

Method and apparatus for logging DTMF phone symbols dialed...

Method and apparatus for recording and managing...

Method and apparatus for recording telephone messages

Method and apparatus for selective audio logo and/or...

Method and apparatus for temporarily deactivating a call...

Method and apparatus for voice mail notes

Method and apparatus for voice mail notes

Method and apparatus for voice mail notes