在对各种会议模型的分析和对比的基础上，文中提出了一种以SIP作为控制信令的分布式多媒体会议框架D CF。
After analysis and comparisons of various conference models, a distributed multimedia conference framework-DCF using SIP as controlling signaling is proposed.
此模型已用于分布式多媒体著作工具的开发。
The distributed multimedia authoring tool being developed is based on this model.
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