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。

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.

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经过五年的建设和运行，中国教育科研网(CERNET)已经成为中国最重要的信息基础设施之一。

China Education and Research Network (CERNET) has become one of the most important information infrastructure in China after its five years developing and running.

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本文描述了在中国教育和科研计算机网(CERNET)的基础上实现的一种基于IP流量的网络记帐方法。

This paper describes a IP traffic accounting system which is based on the China Education and Research Network (CERNET).

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