Say simply, video conference system including video conferencing terminals, multipoint meeting controller MCU, network management software and transmission network four parts.
简单地说，视频会议系统包括视频会议终端、多点会议控制器mcu、网络管理软件和传输网络四部分。
The main function of the Mobility Management sublayer is to support the mobility of user terminals, such as informing the network of its present location and providing user identity confidentiality.
MM子层的主要功能是来支持用户终端的移动性，例如告知网络侧关于用户的位置并且保证用户身份的私密性。
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