Enhanced directory assistance system with voice over IP call...

Enhanced directory assistance system with voice over IP call...

Enhanced directory assistance system with voice over IP call...

Enhanced efficient telephone number portability

Enhanced flexible alerting

Enhanced IP phone operation

Enhanced IP phone operation

Enhanced service control architecture of a telecommunications sw

Enhanced service levels for call-processing services

Enhanced services provided using communication redirection...

Enhanced telecommunications alerting

Enhanced telephony apparatus and system

Enhanced telephony trunk routing

Enhanced whisper feature

Establishing a conference call from a call-log

Establishment of connections between terminals for mobile subscr

Exchange

Exchange for providing service functions for given periods...

Exchange node

Exchange service starting system