SIP_ISUP，SIP ISUP互联互通协议部分，对于学习NGN软交换之间的协议流程很有帮助。...

sip的学习参考文档，对初学sip的用户有较高的参考价值-sip learning reference documentation for novice users sip has a high reference value

IP电视电话会议+VC源码，非常好的IP电话会议的学习代码-IP video and telephone conference on+ VC source, very good IP telephone conference learning code

Windows Mobile Professional 6 及更高版本上利用SMS自动进行状态回复的程序。还包括了以下演示： 使用SMS拦截； 使用配置文件； 检查Outlook约会信息； 基于定制策略对不同电话号码作出不同反应； 使用SIP； 在Windows移动设备上使用db4； 使用提示； 多语言界面和本地化。-Trombone a utility for automating status reply via SMS on Windows Mobile Professional 6 or later. It also demostrates: How to use SMS interception How to use configuration file How to check Outlook appointment information How to react with different phone number based on custom policy How to deal with SIP How to use db4o on Windows Mobile device How to use notification How to enable multilingual user interface and do localization

H323协议的Windows实现，开源代码，可直接使用。-Windows realize H323 protocol, open source code, can be used directly.

SIP协议栈开发（siptiger）

H.323视频会议的相关文档参考-H.323 video frequency conference related documents refer

一个ip电话实例的实现，以vc为开发环境。-an example of the realization of telephone, vc for the development environment.

软交换测试工具,可以反编译查看代码,良好的架构-Softswitch testing tools that can decompile the code view, a good framework for

此软件可以很顺利的实现网络对话，这样对网络编程的初学者很有帮助的-software can smooth network dialogue, the network programming beginners helpful!

vc编写的sip代理服务器,无需其他的库，直接编译-vc prepared sip proxy server, no additional library is directly compiled