IP电话源程序，在Unix环境下编译通过，基于h.323协议。

一个ＭＳ的语音聊天程序，是用ＶＢ写的，很不错，不是用控件实现的，不过不是实时语音，有点像对讲机-a voice chat program is written in VB, very good, not with the controls to achieve, but it is not real-time voice, a bit like a walkie-talkie

RTCP.RTP方面的源码,方便大家学习.-RTCP.RTP source area for everyone to learn.

3G umts communication program. Make call through pc to 3G phone. -3G umts communication program. Make call through pc to 3G phone.

SDP2327，中文版，学习sipHello的同学可以参考一下-SDP2327

权威的skype协议分析，详细分析skype的网络结构、防火墙穿越方法、编解码等实现细节。-authority of the agreement, skype detailed analysis of the network structure, through the firewall, such as codecs achieve details.

G.722语音编码实例化解析VC语言描述!-G.722 speech coding examples of analytic description language VC!

voip 语音编码方式一种G.729源代码，相关算法可以提供研究。-voip voice encoding a G.729 source code, related algorithms can provide research.

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 .

基于QTopia的SIP IP电话源码，在LInux下编译，支持DTMF,G711,GSM-Based on the SIP IP phone qtopia source, in the compiler under LInux to support DTMF, G711, GSM

this sip voip source code too. i dont know why it does not work. please check and then send back to me. thanks -this is sip voip source code too. i dont know why it does not work. please check and then send back to me. thanks