Communication system supporting simultaneous voice and...
Communication system using line appearances on a single line...
Communication system, a private automatic branch exchange, and a
Communication system, call connection server, terminal...
Communication system, connection management server...
Communication terminal device, communication method and...
Communication terminal, repeater, peripheral equipment and...
Communication timing coordination techniques
Communications between service providers and customer premises e
Communications between the public switched telephone network...
Communications channel synchronous micro-cell for...
Communications engine architecture
Communications network
Communications network
Communications network and method for directly routing calls...
Communications network and method for screening incoming...
Communications network carrying synchronous and asynchronous tra
Communications node for transmitting data files over telephone n
Communications system
Communications system