需要的可以用到 ！专业性强！

IP电话源程序，在Unix环境下编译通过，基于h.323协议。-source IP telephony, in the Unix environment compiler, based on the H.323 agreement.

是Opengatekeeper项目的扩展。它支持通过RTP（音频和视频）网守的路由和T.120通讯，因此没有通讯直接在endpoints间进行。-Opengatekeeper project is the expansion. Through its support for RTP (audio and video) Gatekeeper routing and T.120 communications, there is no direct communication between the endpoints.

SIP协议栈开发（minisip）

这是voip网关h.323到gateway的程序代码-This is voip gateway H.323 gateway to the code

VOIP program in VC++, video, voice and other features

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/

openh323 通用库，用到pwlib -Universal library for openh323, using pwlib

算术编码源代码，适用于视频压缩，网络监控等条件下。-arithmetic coding source code, apply to video compression, network monitoring and other conditions.

解析cisco的skinny协议，根据信令自动保存udp语音包，实现cisco的VOIP系统监控。- Analyzes cisco the skinny agreement, the root according to what is believed makes automatically to preserve the udp pronunciation package, realizes the cisco VOIP system monitoring.

在ip电话或者视频通讯开发中，常常需要穿越nat，stun是个不错的选择-In the ip phone, or video communication development, often through the nat, stun is a good choice