Private branch exchange and line exchange method
Private branch exchange networks
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 cascading V5 interfaces
Procedure for ensuring the activation of a V5 interface
Procedure for providing a pstm-mapping in a...
Procedure for subscriber addressing in a cascaded V5 interface
Procedure for the management of a subscriber database in a...
Process and apparatus for restarting call routing in a telephone
Process for distributing engagement requests depending on...
Process for providing the subscriber number of the calling...
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
Providing the most cost-effective long-distance telephone servic
Proxy database for element management system of telephone...
Proxy database for element management system of telephone...