sip协议中sdp消息姐学习笔记，介绍了sdp消息的组成

* How to use the programming framework and classes available in Windows Mobile and Smartphone SDK * The fundamentals of .NET Compact Framework 2.0 * Techniques for developing your own robust Smartphone applications * Steps for customizing components and P/Invoke * How to enhance data and communication security * Ways to improve the performance of your applications * Fundamental techniques for supporting world-ready applications - * How to use the programming framework and classes available in Windows Mobile and Smartphone SDK * The fundamentals of .NET Compact Framework 2.0 * Techniques for developing your own robust Smartphone applications * Steps for customizing components and P/Invoke * How to enhance data and communication security * Ways to improve the performance of your applications * Fundamental techniques for supporting world-ready applications

UPnP DeviceArchitecture v1.0 Specification to build UPnP compatible devices and control points.

Vovida Networks, Inc. 公司发布的sip协议的1.5.0版本。整个文件包包括SIP协议栈的实现，一套SIP用户代理（a set of SIP user agent(SIPset)）和一套 Back-to_back(B2b) 用户代理.-Vovida Networks, Inc.. The company issued a sip agreement version .5.0. The whole package, including the SIP protocol stack to achieve. a SIP user agent (a set of SIP user agent (SIPset)) and a set of Back-to_back (B2b) user agent.

基于sip的服务器程序，java编写，很不错的-Procedures based on the sip server, java prepared, very good

基于语音传输的电话会议系统源代码，非常值得借鉴和学习-Based on voice over the telephone conferencing system source code, very much worth learning and learning

该视频会议源代码,实现功能强大,比传统视频会议算法更优,减少带宽-The video-conferencing source code, to achieve powerful, than the traditional video conferencing better algorithm to reduce the bandwidth

PX3230S协议栈软件包实现了International Telecommunication Union (ITU) H.323协议。主要是H.323版本1和版本2。可以参考其中的实例代码，学习网络音频、视频的传输协议。-PX3230S protocol stack software package to achieve the International Telecommunication Union (ITU) H.323 protocol. Mainly H.323 version 1 and version 2. Refer to examples of code, learning network audio, video transport protocol.

ITU的g729a编码库，可以将pcm转化为g.729格式-ITU G729 annex A lib file ,can transfer PCM file format to G729 format.

一个简单的关于网络录音机的源代码程序，用visual c++编写-A simple tape recorder on the network the source code of procedure, using visual c++ Prepared

本程序在 Windows XP、Visual C++ 6.0 环境下编译通过,但需要rtcdll.dll文件（一般在Windows系统安装目录下的system32文件夹中）。另外，需要摄像头和麦克风等设备。 -This procedure in Windows XP, Visual C++ 6.0 compiler environment, but need Rtcdll.dll file (usually in Windows system directory under the system32 folder). In addition, the need for camera and microphone and other equipment.