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.
此时，作业管理器控制台中仅有的可用功能包括配置作业管理器服务器、邮件会话、安全性和故障诊断功能。
At this point, the only usable function in the job manager console is the configuration of the job manager server, mail sessions, security, and troubleshooting functions.
RTCP可以监视网络上的传输服务质量，并提供质量控制和会话识别功能。
RTCP can be used to monitor the state of data transferring, and provide the control of service quantity and session identification function.
它包含一个控制访问对象的安全核心，位于其上的是一些实现基本功能的模块，如加密和数字签名、证书管理、安全会话、数据密封等。
On top of the kernel are some modules which implement basic functions, such as encryption, digital signature, certificate management, secure session and data enveloping.
为了支持多媒体业务，提供呼叫建立、会话控制、接纳控制等功能的信令协议必不可少。
To support the multimedia operation and supply the function such as call building and session control, the signal protocol is absolutely necessarily.
基于SIP协议的多媒体会议管理系统以SIP协议为会话连接的基础，同时提供发言权控制功能，并且与多媒体应用分离。
SIP-based multimedia conference manage system USES SIP as its session connection, provides floor control and is independent of multimedia.
基于SIP协议的多媒体会议管理系统以SIP协议为会话连接的基础，同时提供发言权控制功能，并且与多媒体应用分离。
SIP-based multimedia conference manage system USES SIP as its session connection, provides floor control and is independent of multimedia.
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