Patent ID: 8213976

Claim:
A communication system comprising: a plurality of communication terminals each of which includes: a communication unit that transmits and receives voice data; and a reproduction unit that reproduces the voice data received by the communication unit; and a server which includes: an administering unit that administers the plurality of communication terminals based on each communication group; an approving unit that approves the transmission of the voice data by one communication terminal in a predetermined communication group among the plurality of communication terminals; a receiving unit that receives the voice data transmitted by the one communication terminal; and a transmitting unit that transmits the voice data received by the receiving unit to plural communicating terminals in another communication group; wherein the one communicating terminal can be engaged in said another and other communication groups, and the communicating system further comprises: a determining unit, in a case where the receiving unit simultaneously receives voice data to be reproduced in the predetermined communication group and voice data to be reproduced in said another communication group, that determines priority orders of the voice data to be reproduced in the predetermined communication group and the voice data to be reproduced in said another communication group; a storing unit for storing the voice data whose priority is determined to be lower by the determining unit; and a data controlling unit that processes the voice data whose priority is determined to be lower by the determining unit after the voice data whose priority is determined to be higher by the determining unit is processed.