GNUgk

自己动手写的sip协议栈，SIP（Session Initiation Protocal）称为会话初始化协议，是由IETF（Internet Engineering Task Force）组织于1999年提出的一个基于IP网络中实现实时通信应用的一种信令协议。-Do-It-Yourself wrote sip protocol stack, SIP (Session Initiation Protocal) known as the Session Initiation Protocol is the IETF (Internet Engineering Task Force) organization in 1999 as a network-based real-time IP communications applications a letter the agreement.

SIP Stacks GNU eXosip: C Linux+Windows+... License: GPL Homepage: http://savannah.nongnu.org/projects/exosip/ The extensible osip: "...It aims to implement a simple high layer API to control the SIP for sessions establishements and common extensions. Once completed, this eXtended library should provide an API for call management, messaging and presence features.... Download the tar file from http://osip.atosc.org/download/exosip/. -SIP StacksGNU eXosip: C Linux+ Windows+ ... License: GPL Homepage: http://savannah.nongnu.org/projects/exosip/ The extensible osip:

itu标准g.723源代码及文档，可以在vc及linux下编译通过-itu standards g.723 source code and documentation, the vc and compile under linux

电话会话实现方法源程序-telephone conversation method source

经典的带内音频dtmf产生和检测的c语言源码，检测准确率相当高-classic band audio DTMF generation and detection of c-source language, detection accuracy rate is very high

SIP协议栈开发（minisip）

VFW,视频会议，基于VFW的视频会议系统-VFW, video conferencing, video-based conferencing systems VFW

H.323协议原理 ------VOIP网络基本构成单元-H.323 networks------ VOIP principle agreement constitutes the basic unit

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_ISUP, SIP ISUP protocol interoperability of NGN Softswitch to study the agreement between the flow of great help.

在开发sip通话或者h323的时候，都想需要作认证，所以这里给出本人开发的一个很小的digest认证流程的小例子。-call in the development or sip h323 time, and they all want to require certification So I developed here is a very small digest authentication process small examples.