Call processing digit translation and characterization
Call processing for intelligent network
Call processing signal routing system in a local exchange...
Call processing system
Call processing to provide number portability
Call reestablishment system
Call routing based on prior telephone calls
Call routing based on user availability
Call routing data management
Call routing method using prioritized source-destination routes
Call routing selection method
Call routing system
Call routing system and method
Call routing system and method with rule-modifying ability
Call tones in communication networks
Call-load-control arrangement for an emergency-call-answering ce
Call-routing method for a virtual private network as well as ser
Called party control of incoming calls
Calling subscriber validation
Capability negotiation in a telecommunications network