著名的VOCAL的代理服务器，重定向服务器，和注册服务器

在windows环境应用，监控voip框架中的关守模块(gatekeeper)的图形化界面程序。-windows in environmental applications, monitoring framework of the voip gatekeeper module (gatekeeper) graphical interface procedures.

OReilly - Practical VoIP Using VOCAL.doc-OReilly- Practical VoIP Using VOCAL.doc

版本V4.1.1,Linux上的开放源代码的IP电话软件SIP协议，主要用于语音通话，但它也支持发送文本的即时消息，即可以像ICQ那样地用文字聊天。 如果网络带宽足够的话，它还支持可视电话 Kphone是GPL的开放源代码的软件。-version 4.1.1, It is IP phone software of Linux open source code based on SIP protocol, it can be used to voice communication, and surpport text IM, same function as ICQ used to text chat. In broad band circumstance, it surpport video conference. Kphone is GPL open source software .

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

本文档可以告诉您　如何在libosip的基础上开发即时消息-this document can tell you how libosip development on the basis of instant messaging

很好的代码，大家多侃侃 可以很好的饿学习-good code, everyone can be good again and hunger study

voip 中的 rtp的具体介绍，祯结构-voip rtp of the specific briefing, Tanigaki structure

第九章代码，基于ＶＦＷ的视频会议系统-Chapter IX code, based on the VFW video conferencing systems

IP电话演示，Delphi7编译通过-IP telephony demonstration compile Delphi7

openser 最初版本，代码简介，初学opensips,kamailio可以先看最初代码，比较适合。-openser initial version, code profiles, beginner opensips, kamailio you can look at the original code, and is more suitable.