Abstract: A wireless communication system includes a management device which receives an audio signal and position information from wireless communication terminals by a first wireless communication system, determines whether an emergency situation signal has been received, decides an emergency-situation influence range, specifies a transmission-destination communication terminal for a control signal, and transmits information to an operator terminal and the control signal to the transmission-destination communication terminal by the first wireless communication system, the operator terminal which receives, by the first wireless communication system, the position information and the audio signal and the transmission-destination information, and transmits, by a second wireless communication system, an audio signal of the operator terminal to the wireless communication terminal, and the wireless communication terminal which transmits the audio signal to the management device to generate the control signal and receives th

Abstract: When a second communication unit receives an identifier received last in time by a second terminal apparatus from the second terminal apparatus as a last identifier, a relay recording control unit causes the second communication unit to transmit a list of identifiers recorded in a recording unit after the last identifier to the second terminal apparatus, and that, when the second communication unit receives the identifier included in the list from the second terminal apparatus as a transmission request identifier, extracts a first sound signal corresponding to the transmission request identifier from the recording unit and causes the recording unit to transmit the first sound signal extracted to the second terminal apparatus as the second sound signal.