Communication system having a service feature which can be activated and/or deactivated

Claim 1

Communication system comprising a first subscriber line for a first user terminal to which subscriber line a service feature functioning in a service switching point is assigned, which feature can be activated and/or deactivated by the service switching point from the first subscriber line by the first user terminal, characterized in that means are provided for remote control of the first user terminal by a second user terminal of a second subscriber line whereby the second terminal remotely controls the first terminal to activate and/or deactivate the service feature by the service switching point, in that means are provided for transmission of signaling information via a switching network from a second switching element of the second user terminal to a first switching element of the first user terminal to effect a transmission of signaling information from the first user terminal to the service switching point to activate and/or deactivate the service feature, and in that, after the service feature has been activated and/or deactivated, a transmission of a first acknowledge signal takes place from the service switching point to the first user terminal and means are provided for the subsequent transmission of a second acknowledge signal from the first user terminal to the second user terminal by the first and second switching elements.