Telephone call coupling from one subscriber to another - using changeable extension number store and ring tone generator for rapid switch through

摘要

The call is put through to a first subscriber and is redirected to a second subscriber. The first subscriber station has a fixed device consisting of a number store, a dialling device connected to it, and a switching through device controlled by a remotely controlled switch. There is a movable device which can be connected to the telephone of any subscriber. A pilot tone generator generates the switching signal for the remotely controlled switch in the station.