CAJ | 학술논문

Osip2和eXosip2协议栈都是非常轻巧的基于SIP的开源协议栈，基于它们可以构建许多实用的SIP终端系统。介绍了Osip2和eXosip2协议栈的编译和使用方法，并在此基础上对支持GB／T 28181标准的SIP应用系统中各关键部件用户代理（UA）的开发方法和功能特点进行了讨论。结合符合GB／T 28181标准的SIP应用系统，对论文设计的客户端插件、媒体服务器和代理网关等UA进行了实际测试，效果良好，可完成国标中规定注册、心跳、实时点播、录像、历史回放下载等功能。设计的UA部件在全国多个监控联网系统中得到了广泛应用。
Osip2화eXosip2협의잔도시비상경교적기우SIP적개원협의잔，기우타문가이구건허다실용적SIP종단계통。개소료Osip2화eXosip2협의잔적편역화사용방법，병재차기출상대지지GB／T 28181표준적SIP응용계통중각관건부건용호대리（UA）적개발방법화공능특점진행료토론。결합부합GB／T 28181표준적SIP응용계통，대논문설계적객호단삽건、매체복무기화대리망관등UA진행료실제측시，효과량호，가완성국표중규정주책、심도、실시점파、록상、역사회방하재등공능。설계적UA부건재전국다개감공련망계통중득도료엄범응용。
Osip2 and eXosip2 both are very light and handy SIP(Session Initiation Protocol) based open protocol stacks . Many practical SIP terminal systems can be built based on them .The compiling and usage methods of these 2 protocol stacks are introduced .The development methods and functional characteristics of user agent in GB/T 28181 supported SIP applica‐tion systems such as client‐side plugins ,proxy gateway ,media servers and other SIP systems are discussed .In the GB/T 28181 standard SIP application system ,according to the development and actual integration test of each UA's prototype ,the expected effects have been achieved .With these UA ,the SIP system can achieve the functions stipulated in GB/T 28181 such as registration ,heartbeat ,real‐time video on demand and so on .These UA components have been widely used in many video surveillance network systems all over China .