| 摘要 |
The invention relates to a system which can be used for exchanging short multimedia messages between two or more users. The system is used, without distinction, for client-server implementations (31, 32, 33) or for server-free client-client implementations (41, 42). The system has the following essential technical features: (i) the session is established (311, 411) when a first client presses a user button and is ended (313, 413) when said first user releases said button; (ii) at the start of the session (311, 411) a list of all the participants is transmitted; (iii) at the start of the session (311, 411) a global session identifier is transmitted; (iv) the clients receiving a PTT message sent by the aforementioned first client optionally reply after receiving said list and identifier. |
