It is a device capturing and controling all the signals, which are being created by the whole system, especially the made and received phone call signals. The device is mostly used for connecting regular phone system with the Internet and backwards.
The intercept of the incoming call from an indefinite telephone number. During the call intercept the callers should present themselves and after that they will be connected with the subscriber who will have a reproduced name of the caller. One must have Caller ID in order to use Call Intercept.