Cable modem and cable modem system

Calculating physical routes in a communication network

Call processing device and method

Cascade control system for network units

Cell loss rate sensitive routing and call admission control meth

Cell switch module with unit cell switching function

Cell switch module with unit cell switching function

Centralized method and system for excluding components from...

Changing line cards associated with a communications network

Channel and data link automatic restoration

Channel reassignment method and circuit for implementing the...

Channel switching method and channel switching controller

Channel tracking in a mobile receiver

Chase me system

Circuit arrangement for providing a back-up circuit for...

Circuit pack sparing arrangement

Circuit switching control method for multiplex communication equ

Circuit to provide backup telephone service for a multiple...

Circuit to provide backup telephone service for a multiple...

Circuit to provide backup telephone service for a multiple...