SIP协议，中文，也是网上掏来的，大家参考，谢谢。

在Vovida基础上实现自己的SIP 协议栈――Vovida User Agent-based on the SIP protocol stack-- Vovida User Agent

3CX -VOIP软件客户端和服务器配置手册-3CX VOIP product client and server configure manual

sip协议中sdp消息姐学习笔记，介绍了sdp消息的组成-sdp message sip agreements sister study notes on the composition of the sdp message

SIP Stacks libmsip: A C++ SIP stack for Linux developed for the miniSIP project. Homepage: http://www.minisip.org/libmsip/. -SIP Stackslibmsip: A C++ SIP stack for Linux developed for the miniSIP project. Homepage: http://www.minisip.org/libmsip/.

gnugk-2.2.1-2-win32-x86

这是与一本书－《SIP协议及其应用》配套的电子教案。-This is a book- "SIP protocol and the application of" complementary electronic templates.

分网络传输部分、音频输入、音频输出、视频输入、视频输出、音频视频压缩、音频波形显示、界面。共创建个线程，音频输入线程、音频输出线程（这两个有WINAPI隐式创建）、音频视频压缩传送线程和主线程。因为音频的采样率比视频采样率高得多，这里的音频的采样率为8000Hz而视频仅为20左右，所以从宏观来看，音频是连续的，而视频是非连续的，这也就是无须为视频输入输出创建独立线程的原因。- Minute network transmission part, audio frequency input, audio frequency output, video input, video output, audio frequency video frequency compression, audio frequency profile demonstration, contact surface. Altogether founds the line regulation, the audio frequency input line regulation, the audio frequency output line regulation (these two has WINAPI to hide type to found), the audio frequency video frequency compression transmission line regulation and the master line regulation. Because the audio frequency sampling rate is much higher than the video frequency sampling rate, here audio frequency sampling rate is 8000Hz but the video frequency is only about 20, therefore from macroscopic looked, the audio frequency is continual, but video frequency right and wrong continual, this also

基于G729语音压缩技术的源码，适当修改就可以加到自己的代码里面，很实用-G729 voice compression technology, based on the DLL source code, with appropriate modifications can be added to your code inside, very practical

信息产业部发布的关于SIP协议的技术规范，第一部分:第二部分:基于会话初始协议(SIP)的呼叫控制的应用-issued by the Ministry of Information Industry on the SIP protocol specification, Part I : Part II : Based on Session Initiation Protocol (SIP) Call Control Application

rtp模块， 包括rtp协议报文组包，解析，功能独立，需要自行添加rtp的session管理-rtp module, including the rtp protocol packet group package, analytical, functional independence, the need to add the session management rtp