OpenSIPS是一个成熟的开源SIP服务器，除了提供基本的SIP代理及SIP路由功能外，还提供了一些应用级的功能。OpenSIPS的结构非常灵活，其核心路由功能完全通过脚本来实现，可灵活定制各种路由策略，可灵活应用于语音、视频通信、IM以及Presence等多种应用。同时OpenSIPS性能上是目前最快的SIP服务器之一，可用于电信级产品构建。-OpenSIPS is a mature open source SIP server, in addition to providing basic SIP proxy and SIP routing capabilities, but also provides some application-level functions. OpenSIPS structure is very flexible routing capabilities of its core achieved entirely through the scr ipt can be flexible and customize a variety of routing strategies can be applied in a flexible voice, video, communications, IM and Presence, and other applications. At the same time OpenSIPS performance is one of the fastest growing SIP server can be used to build carrier-class products.