Telephone system responsive to call control protocol

Telephone system that notifies caller of called party's state

Telephone system using recorded messages to make outbound announ

Telephone system with call forwarding apparatus and method

Telephone system with emergency override for caller to...

Telephone system with programmable line appearances

Telephone terminal controlled conference inspection

Telephone terminal equipment and terminal control program

Telephone terminal, call system and terminal control program

Telephone with automatic redial of number provided by informatio

Telephone-call distributor

Telephonic telemeeting system

Telephoning method comprising novel subscriber service

Telephony annotation services

Telephony control mechanism

Telephony network optimization method and system

Telephony system and a method of operating same

Telephony system with supervisory management center and paramete

Telephony/conference activity presence state

Temporary message routing and destination selection