Method, system, repeating apparatus and communication apparatus for multi-address calling

摘要

In a point-to-multipoint communication system, in which one user at a time has a transmission right, a communication apparatus (1a) acquiring the transmission right accepts an input specifying another communication apparatus (1b) as a main target of the user's output, e.g. voice and then performs multi-address calling of output data such as the user's voice to the other communication apparatuses (1). Upon receiving the output data, the specified communication apparatus (1b) executes output processing such as image output and voice output for notifying the fact of being specified. This ensures that the main addressee of the output data pays attention to it. The system can be applied, for example, to a Push-to-talk over Cellular (PoC) service using mobile telephones.