Circuit arrangement for a small PABX with a switching matrix tha
Common automatic route selection leading digit strings
Common-channel message conversion method for communication netwo
Communicating between diverse communications environments
Communication apparatus and method
Communication system architecture and operating protocol therefo
Communication system having a service feature which can be activ
Communication system with centralized global title translation t
Communication system with multiple SCP
Communication system with remotely controllable signal receiving
Communications of telephony control signaling over data...
Communications signalling network apparatus
Compatibility server with in-supported telephone number...
Computer system and method for providing services to users...
Configurable digit collection for various signaling protocols
Connection control method for personal communications
Connection-oriented congestion controller for common channel sig
Control interface for computer supported telephony...
Control interface for linking a computer supported telephony...
Control of telecommunications networks