| 摘要 |
The present invention discloses a PTT service system and method thereof. The system includes a user terminal equipment, an application server, a control equipment and a gateway equipment, in which, the user terminal equipment connects with said application server, control equipment and gateway equipment by access network; the application server connects with said access network and control equipment for building lists of users groups and relating information and storing and managing them; the control equipment provides establishment of signaling messages for the user terminal equipment, distributes them to other terminal equipment within group, and controls the gateway equipment; the gateway equipment sets up media stream with the user terminal equipment based on signaling of the control equipment, and distributes the media stream sent by users having a right of speaking to other users within the group. The system is applied to multiple types of users such as fixed user, mobile user, soft phone user, WLAN user etc, and readily realizes many kinds of network modes, supports realization of PTT service spanning networks.
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