Adaptive feature behavior
Advanced intelligent network with intelligent peripherals interf
Ain based call retry and enhanced call waiting services
AIN triggers to invoke non-AIN features
Alternate service activation
Answering service giving different messages depending on...
Answering service giving different messages depending on...
Apparatus and method for intelligent call routing and call retur
Apparatus and method for local number portability using nongeogr
Apparatus and method for managing telephony-based services
Apparatus and method for switching incoming calls through to...
Area wide centrex
Associating call appearance with data associated with call
Associating call appearance with data associated with call
Audible confirmation using text to speech conversion
Automated callback system
Automated system and method for subscriber line service control
Automatic access to communication service providers
Automatic access to information service providers
Automatic routing and information system for telephone services