一个轻量级的开源sip代理服务器，以osip协议栈为基础开发的。可以作为开发者初学材料。-a lightweight revenue sip proxy server to osip protocol stack developed on the basis of. Can be used as learning materials developers.

基于OSIP协议栈实现的UA客户端和UA服务器端的基本实现文档（内含详细代码）。是SIP电话开发的有用参考,OSIP-based protocol stack to achieve the UA client and server-side UA to achieve the basic document (containing the code in detail). The development of SIP phones is a useful reference