Communications router has identifier stored within it so that when calling the router the caller ID is evaluated and authorized as an identifier by time-related activation at the router.

摘要

The device has an identifier stored within it in such a manner that when calling the router the caller ID is evaluated and authorized as an identifier by time-related activation at the router. The activation can consists of operating a button, switch, key switch of external contact, by applying sound, by switching on the power supply, by a voltage signal, light signal or telephone call.