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The Auerswald ETS 4308i ISDN PBX Reverse Engineering Project是一种完全开放式的源客户端软件适用于the Auerswald ETS 4308i ISDN PBX。它的目的是为有效地使用LCR-feature of the PBX 提供工具，为改换PBX的配置，为读取电话数量，为将ISDN-D-channel-protocol of the PBXzuop作为输入源或者isdnlog来使用。-ETS 4308i ISDN PBX Reverse Engineering Project is a completely open-source client software applicable to the George Mason ETS 4308i ISDN PBX. It is designed for the effective use of LCR-feature of the PBX with the tools to change the configuration of PBX, telephone number for readers to be ISDN-D-channel-PBXzuop protocol of the input source or isdnlog to use it.

SIP Stacks SIP from vovida.org: C++ Linux+Windows+... License: Vovida Software License Homepage: http://www.vovida.org/protocols/downloads/sip/ -SIP StacksSIP from vovida.org: C++ Linux+ Windows+ ... License: Vovida Software License Homepage: http://www.vovida.org/protocols/downloads/sip/

利用Jainsip库开发的SIP客户端样例，适合初学者使用-Jainsip database development using SIP client sample, suitable for beginners to use

为北京移动项目制作的SIPP呼叫脚本，主要用于用户的注册、发起呼叫等脚本，实际应用于北京移动的并发呼叫测试项目中，非常具有参考意义。

视频会议编码传输，视频编解码与传输的Demo程序,-transmission coding video conferencing, video codecs and transmission Demo procedures,

nettalk 一个很好的网络电话源代码 希望大家喜欢-nettalk a good Internet phone source code hope you like

openh323 通用库 -Universal library for openh323

VOIP行业的H323协议终端软电话的源代码，对VOIP行业的开发、技术维护人员有较大帮助。-H323 VOIP industry agreement soft phone terminal source code for the development of the VoIP industry, technical maintenance staff have more help.

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 .

一个H.323协议栈，C源程序，跨平台，实现了H.225，H.245，RAS，和RTP。-an H.323 protocol stack, C source, cross-platform, achieving H.225, H.245, RAS, and RTP.