A communication system having at least one user worn receiver unit for receiving audio signals via a wireless audio link connected to a stimulating means for stimulating the user's hearing according to audio signals received via the audio link; and a plurality of user worn transmission units and a microphone arrangement for capturing audio signals from the respective user's voice, an audio signal transmission portion for establishing the wireless audio link to at least one receiver unit to transmit the captured audio signals to the at least one receiver unit, an assistive digital link transceiver portion for establishing a bidirectional assistive digital link to at least one of the other transmission units and/or to an external command unit, and a control unit for controlling signal transmission of the transmission unit according to data exchanged with the control unit of the at least one of the other transmission units and/or the external command unit.