多点会议需要一个叫多点控制器(MCU)即“桥”的物理装置。
Multipoint conferences require a physical device called a Multipoint Control Unit (MCU) or "bridge".
多点控制器的主要功能之一是对来自各个与会者的视频流进行处理与转发。
One of the main functions of multipoint controller is to process and redistribute the video stream coming from every participant.
该协议可以用于开始会话、邀请成员参加由其他方式做广告的会话，或者利用多点控制器开始多方通话。
The protocol may be used to initiate sessions, invite members to sessions advertised by other means or initiate multiparty calls using a multipoint control unit.
该协议可以用于开始会话、邀请成员参加由其他方式做广告的会话，或者利用多点控制器开始多方通话。
The protocol may be used to initiate sessions, invite members to sessions advertised by other means or initiate multiparty calls using a multipoint control unit.
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