摘要
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DCF。构造了分布式服务器树(DST)结构,将会议系统中的资源管理、媒体处理等任务分发给DST中的子服务器处理,避免了单服务器会议系统中出现的性能瓶颈,同时,还提供了子服务器崩溃时服务器迁移功能。在给出DCF的结构后,研究了如何使用SIP协议及其扩展来完成基本的会议控制功能。
After analysis and comparisons of various conference models, a distributed multimedia conference framework-DCF using SIP as controlling signaling is proposed. DCF constructs a distributed server tree （DST） for distributing tasks such as floor management and media operation to sub conference servers, which avoid the bottleneck of single-server conference, and can support server transfer when a sub conference server crashed. After presenting the architecture of DCF, on how to expand basic SIP mechanism to accomplish conference control functions is focused.
出处
《科学技术与工程》
2007年第8期1647-1651,共5页
Science Technology and Engineering
