一个很好的SIP协议栈,用标准C实现.大家学习吧.

支持h323的视频电话客户端-support h323 video telephony client

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 .

使用eXosip开发的例子，使用vc打开工程直接编译库和例子，注意需要安装了xp平台开发包-use eXosip development example, the use of open vc works directly translated libraries and examples, the need to install the Platform Development Kit xp

osip,exosip，VC6.0下编译版本，含例子程序。-osip, exosip, VC6.0 under the compiler version, containing examples of procedures.

这是voip关守的程序源代码-This is voip gatekeeper of source code

ip电话软件speakfs 7.2版本，GSM, ADPCM, LPC, and LPC-10压缩和多种加密算法-ip phone software speakfs 7.2 version, GSM, ADPCM, LPC, and LPC-10 compression and a variety of encryption algorithm

一个介绍有关H323的PPT课件。里面详细的介绍了H323协议的相关内容。-H323 a briefing on the PPT courseware. Inside a detailed introduction to the H323 of the content of the agreement.

Delphi写的IP电话源码-IP phone sourcecode writed by Delphi

主要通过对SIP协议的研究，根据这个协议的特点，设计出来一个基于SIP电话会议系统。用户可以通过WEB方式登录到预先建立好的会议室，进行电话会议。-primarily through the SIP, according to the characteristics of this agreement, designed a SIP-based telephone conferencing system. Web users can log on to advance ways to establish good meeting rooms, conference calling.

c++的voip应用源码，很简单的一个例子-c++ the voip application source code, a very simple example