| 摘要 |
<p>A PPT client (1) registers floor control information in a group list storage unit (7) of a group list management server (5). When a PTT group session is established, a PTT floor control unit (10) of a PTT server (8) acquires floor control information associated with the group from a group list storage unit and stores it in a floor control information storage unit (12). Next, a PTT floor control unit assigns and releases a floor to a PTT client according to information such as a floor allocation sequence and the time for assigning a floor in the floor control information acquired. When the floor control information has specification of a data type, the data type is specified when assigning a floor and a PTT client transmits the specified data to the PTT server. A PTT control unit (11) of the PTT server transmits the data received from the PTT client having a floor, to another PTT client.</p> |
