IP电话源程序，在Unix环境下编译通过，基于h.323协议。

POS前台C++程序,源代码齐全,对这方面感兴趣的朋友,可以-POS front C++ Procedures, the source code complete, interested friends, you can

voip实现语音通话的例子，推荐大家下载！-voip voice examples realize recommend everyone to download!

eXosip is a GPL library that extend the capability of the oSIP library. It aims to implement a simple high layer API to control the SIP for sessions establishements and common extensions.

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

2003年最新版ITU-T H.323协议全文，为H.323IP电话系统开发工作提供最权威、最直接的指导。-2003 the latest version of the ITU-T H.323 transcript of H.323IP telephone systems development work to provide the most authoritative and most direct guidance.

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

一个g.729视频电话的源程序！-a telephone G.729 video source!

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RFC文档中有关SIP协议的，3261，3264，3428，3265，2327，2543，大部分都是中文的，还有中华人民共和国通信行业标准中有关SIP的标准。-RFC documentation of the SIP, 3261,3264,3428,3265,2327. 2,543, most of whom are Chinese, there is the People"s Republic of China telecommunications industry standards on the SIP standard.