Pots number processing using a service control point

Private branch exchange

Private branch exchange

Private branch exchange (PBX) system, private branch...

Private branch exchange and line exchange method

Private branch exchange system and method for control thereof

Private branch exchange system having an automatic optimal route

Procedure and system for ensuring emergency communication

Procedure for providing a pstm-mapping in a...

Procedure for the management of a subscriber database in a...

Processing of data message in a network element of a...

Programmable service architecture for call control processing

Programmable universal signaling circuit for a telephone network

Protocol conversion using channel associated signaling

Proxy database for element management system of telephone...

Proxy database for element management system of telephone...

Receiver for detecting different fixed frequency signals on a te

Selective message discard

Service interaction media in an intelligent network environment

Signaling network gateway device and method for use in a signali