Communication apparatus for responding to calls to a different apparatus on a network

摘要

In a communication system having a plurality of communication apparatuses that are connected to one line, each communication apparatus has a detection circuit for detecting a call signal from the line to another communication apparatus connected to the line. Each communication apparatus also has a circuit that informs the operator at the communication apparatus of such call signal or a device for altering such call signal to a call signal to the communication apparatus itself.