Implied principal busy status indicator for covered calls
Incoming call forwarding communication system and the method
Incoming call routing system with integrated wireless...
Incoming call transfer controller and incoming call transfer con
Incoming call transfer terminal
Incoming telephone call distribution system and method
Integrated message service system
Integrated telecommunications services for mobile and...
Integrated telephony and data services over cable networks
Intelligent call screening system
Intelligent forwarded telephone call handling with a call...
Intelligent telephone set
Inter-network call forwarding with subscriber identity
Interaction of routing features in a telephone system
Internet service provider call redirection
IP call forward profile