SIP is naturally in harmony with NGN and it is one of the most important session control protocols in NGN network.
SIP与NGN网络具有的良好契合性，使其成为NGN 网络中最为重要的会话控制协议。
Collaborative session techniques are studied, including session control, floor control and collaborative awareness.
研究协同会话技术，包括会话控制、发言权控制和协同感知。
The persistent virtual meeting room can record changes in session context such as maintaining a record of session control events, changes to Shared resources, and a listing of participants.
该持续的虚拟会议室可以记录会话上下文的变化，例如保持会话控制事件的记录、共享资源的变化和参与者列表。
Session control, including expiration and the signature of legal terms and conditions.
会话控制，包括过期以及合法条款和条件的签名。
Control layer: the Call Session control Function (CSCF), which is a general name that refers to SIP servers or proxies, is one of the core elements in the control layer.
控制层：呼叫会话控制功能(Call Session Control Function,CSCF)是指代sip服务器或代理的统称，是控制层中的核心组成部分之一。
Control layer: the Call Session control Function (CSCF), which is a general name that refers to SIP servers or proxies, is one of the core elements in the control layer.
控制层：呼叫会话控制功能(Call Session Control Function,CSCF)是指代sip服务器或代理的统称，是控制层中的核心组成部分之一。
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