Meaning – The telephone today, is used for a host of different tasks, such as making and receiving calls, initiating conference calls and much more. The telephone has to be designed to handle these tasks and also ensure that the user is able to redial a particular number if the first attempt to make a call, fails.
In order to do all this, the device hat is needed is a computer controlled switching circuit, called the computerised branch exchange, or CBX. The dictionary meaning of the CBX is a computer-controlled telephone switching system that supports such services as conference calling, least-cost routing, direct inward dialing, and automatic reringing of a busy line.
Example of Usage – “The engineer prepared a detailed documentation of the computer branch exchange unit at the organisation.”