Dial plan generator
Dialed number recognition arrangement
Dialed number service routing in a telephone network by...
Digital exchanging apparatus and method of communication...
Digital loop carrier system
Direct distance dialing (DDD) access to a communications service
Distributed gateway system for telephone communications
Distributed key telephone station network
Drive and method for transferring unbundled network elements...
Dynamic adaptation to congestion in connection-oriented...
Dynamic load limiting
Elimination of inoperable service node during call set up
Emergency route control for a communication network
Emergency services for packet networks
End-User communications device with automatic carrier selection
Enhanced application telephone network
Enhanced call routing in competitive local telephone networks
Enhanced overflow call processing
Enhancing an intelligent network service
ETSI intelligent network capability set 1 intelligent...