Patent ID: 8107948

Claim:
A radio communication system comprising: a management server configured to manage a group call in which a call within a group consisting of a plurality of radio communication terminals is possible; and a radio communication terminal configured to communicate with the management server, wherein the management server includes: a halfway participation request receiver configured to receive a halfway participation request for requesting halfway participation in the group call from the radio communication terminal; a judgment unit configured to specify an application executed by the radio communication terminal transmitting the halfway participation request on the basis of the halfway participation request received by the halfway participation request receiver, and to judge whether the specified application matches an active application that is an application which is being executed in the group call; and an application notifying unit configured to notify the radio communication terminal transmitting the halfway participation request of the active application when a judgment is made that the application executed by the radio communication terminal transmitting the halfway participation request is different from the active application, and the radio communication terminal includes: a transmitter configured to transmit the halfway participation request to the management server; a receiver configured to receive a notification of the active application from the management server; and a controller configured to perform control, based on the notification received by the receiver, so that the halfway participation request is retransmitted to the management server by using the active application.