【摘要】 在广域网上构建和实现组播视频会议 ,需要解决各接入点的网络的组播环境问题 ,视频会议管理和服务问题 .中国教育和科研计算机网 (CERNET)在全国主干节点上构建和实现了组播视频会议系统 ,成为全国教育网各节点的视频会议交流平台 .该系统的稳定运行尤其是在 2 0 0 3年SARS期间的成功应用 ,对在我国互联网开展和推广基于IP组播的视频会议有重要的示范价值更多还原

【Abstract】 Two problems, network layer multicast environment and conference manage, should be faced when constructing multicast based video conference on WAN. China Education and Research Network (CERNET) construct and realize the multicast based video conference system on CERNET backbone and make it the communication platform for CERNET nodes. The system running stably and reliably especially successfully applied during the period of 2003 SARS in China, is proved significant for deploying multicast-based video conference application in China.更多还原