A method for granting a client talk burst (TB) includes the following steps. A push to talk over cellular (PoC) server receives a TB request message from a TB requesting client. If the TB requesting client is a client with the pre_emptive priority, the PoC server revokes a TB taken by a permitted client, and grants the TB to the client with the pre_emptive priority. Meanwhile, the disclosure further provides a system for granting a terminal TB and a PoC server. Through the method, system, and the PoC server provided by the disclosure, it is ensured that the client at the pre_emptive level may grab the TB taken by the client with a lower TB priority simply through pressing a key once, so as to enhance the users' experience.
展开▼
