There are several kinds of logical entity defined in tightly coupled conference system: FOCUS, Mixer, Conference Policy Server and Conference Event Notification Server.
紧耦合结构会议系统中定义了如下逻辑实体：FOCUS、媒体混合器、会议策略服务器和会议事件通知服务器。
There are several kinds of logical entity defined in tightly coupled conference system: FOCUS, Mixer, Conference Policy Server and Conference Event Notification Server.
紧耦合结构会议系统中定义了如下逻辑实体：FOCUS、媒体混合器、会议策略服务器和会议事件通知服务器。
应用推荐