摘要： 采用分层管理的思想,提出了SIP视频会议系统中Focus的软件设计构架,并详细介绍了构架中各功能模块的作用和实现,还给出了某些关键算法。测试结果表明,Focus的主要性能指标能满足中等规模会议的要求,其实现是有效的。

关键词: Focus, 视频会议系统, 会议控制, SIP

Abstract: This paper presents a layered framework of Focus.This framework comprises three components that are main control, conference manager and connection control. The connection control component maintains signaling relationship with conference participants and opens or closes media channels for participants. This paper not only describes how these components work but also gives the key arithmetics about how to implement them. The experiment results show that Focus can meet the demands of medium-size conference and its design and development is effective.

中图分类号: 

• TP393