Computerized mail notification system and method which detects c

Concatenated audio messages

Concurrent state machine space in a telecommunications network

Conference bridge with improved handling of control...

Conference call

Conference call aggregation using an interactive voice...

Conference call facility

Conference call participation tracking

Conference call peer-driven degraded line detection and removal

Conference call setup automation

Conference calling system

Conference calls via an intelligent call waiting interface

Conference circuits and methods of operating them

Conference communication system

Conference endpoint instructing conference bridge to mute...

Conference speech-channel forming method based on private branch

Conference system and terminal apparatus

Conference system discussion unit with exchangeable modules

Conference system for dial-out telephone calls

Conference system with automatic speaker detection and speaker u