SIP网页呼叫扩展系统研究与设计  

Research and design of web-based SIP call system

作　　者：刘孙云[1] 龙昭华[1] 张林[1] 

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065

出　　处：《计算机工程与设计》2013年第2期386-391,共6页Computer Engineering and Design

基　　金：国家科技重大专项基金项目"新一代宽带无线移动通信网"(2009ZX03004-003-04);全国信息安全标准化技术委员会<物联网安全技术体系>标准研究基金项目([2011]046号-21)

摘　　要：针对目前在网页呼叫系统中广泛应用的SIP通话系统的网页呼叫扩展系统很少的问题,提出了一种基于SIP的网页呼叫功能扩展系统设计方案。阐述了Web SIP代理服务器以及呼叫网页与其之间通信协议内容的设计,使得新扩展系统能够结合已有的SIP特性实现网页呼叫功能。鉴于单台Web SIP代理服务器性能有限,实际使用时需要由多台Web SIP代理服务器提供服务。结合排队论模型对系统进行分析,得出服务质量较好的系统服务器组织方案,并对集中式负载均衡调度的负载更新进行改进以提高服务器之间的调度与负载均衡问题。测试结果表明,改进的调度比原有的调度性能得到明显改善。最后通过Silverlight和C#实现整个系统。Currently there are few Webbased call systems which deal with the communication between web and SIP call system. So the design scheme of Webbased call system for SIP call system is proposed. The Web SIP proxy server and the communica tion protocol between Web and Web SIP proxy server is designeed, to make new extended system utilized the existing SIP characteristics to realize Web call function. Because of the single machine Web SIP proxy server limited performance, a better quality of service system server organization plan is put forward based on the queuing model. The centralized scheduling is modi fied to deal with the scheduling and load between server problems. New scheduling has a significant performance improvement than the original scheduling. Finally the whole system is realized by Silverlight and C#.

关 键 词：网页呼叫系统 WEB SIP代理服务器 会话初始化协议 兼容性 排队论 集中式调度改进 银光 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]