Communication system for controlling a call portion

Communication system for E1/T1

Communication system for interactive services with a packet swit

Communication system formed by ATM network and multiplexing devi

Communication system having a local area network adapter for...

Communication system including a client controlled gateway for c

Communication system interfacing control of quality of...

Communication system provided with control apparatus between...

Communication system supporting simultaneous voice and...

Communication system using line appearances on a single line...

Communication system with communication controller and...

Communication system with communication route retrieval and...

Communication system with multicarrier telephony transport

Communication system with physical interface and...

Communication system, a private automatic branch exchange, and a

Communication system, apparatus, and method in which data...

Communication system, call connection server, terminal...

COMMUNICATION SYSTEM, COMMUNICATION APPARATUS WHICH CAN BE...

Communication system, communication method, and data...

Communication system, communication method, and data...