Caller ID call-back device
Caller identification of recipient that answered a...
Caller information display methods and systems
Caller originated multiple calling
Caller select with memory for telephone number programming...
Caller-controller barge-in telephone service
Calling assistance system and method
Calling party invoked held call monitoring
Calling party name provisioning
Calling party number override for emergency services
Calling party ringtone selection in telephone system
Calling party ringtone selection in telephone system
Calling terminal controlled call coverage
Camp-on communication managing method and apparatus
Capacity provisioning for AIN
Carrier independent network services
Casual agent pool
Celler identification of recipient that answered a...
Central call screening system
Centralized communication control center and methods therefor