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。...

RTC下接收呼叫的例子（如果是VC用户，请新建一个APPLICATION 32空工程，然后，用ADD FILE的方法把所有的文件包含在工程中编译）-RTC receive calls example (If yes VC users, a new air APPLICATION 32 works, and then use the ADD FILE all the documents included in the project compiler)

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.

使用Rtc/RTCP技术来传输VIDEO和SOUND的程序(需要到MICROSOFT下载最新的RTC CLIENT SDK API才能编译，VC7不需要下载)-use Rtc/RTCP technology to transmit VIDEO SOUND and procedures (need to download the latest Microsoft RTC Client API SDK can be built, VC7 do not need to download)

Objective Systems Open H.323 for C (ooh323c) is a simple H.323 protocol stack developed in C. The ASN.1 PER messaging code was developed using the ASN1C compiler using a modified version of our core run-time libraries. Additional open source components as well as code developed in-house were added to produce a functioning stack.

用vc实现的voip程序，经过测试，已经成功，希望与大家分享-Vc realize with the voip procedures, tested and have successfully, I hope to share with you

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.

基于DirectShow开发的一个视频和Windows桌面远程监控程序，比较简单易懂，提供了完全的C++源代码，可执行可复用，希望对大家工作上有帮助。-based on the development of a DirectShow Video and Windows desktop remote monitoring procedures, relatively simple to understand and provides a complete C source code, the executable can reuse, and I hope to work with you to help.

视频点播系统VOD源代码，VC++开发，作者陆其明-VOD system source code, VC development, its author Lu Ming

本程序自带反向回传语音代理服务，可以使两个不同局域网内的客户机通过国际互连网进行语音通讯，本程序使用点对点方式，不通过任何中介服务器速度快，语音延迟极小，声音清晰逼真，其效果和真实IP电话不相上下，程序界面简洁，操作简单，是在互连网上打IP电话的极好工具，唯一的要求是通话双方都要有电脑，并连入互连网。 本程序能实现以下连网操作功能： 1.通话双方是同一局域网内的用户 2.通话双方是不同局域网内的用户，并通过各自的网关连入互连网 3.通话双方一个直接连入互连网，另一个处在局域网中，并通过网关连入互连网 4.通话双方直接连入互连网 一般的语音聊天软件只能实现1，4两种连网功能，而本程序能完全支持所有这四种连网情况，因而能使所有用户享受到语音聊天所带来的好处.-reverse the procedure own voice back-agency service, can make two different LAN client through the Internet for voice communications, point-to-point use of this procedure, not through any intermediary server speed, voice minimal delay, loud realistic, and the real effect of IP phone lines, procedural interface simple, simple operation, the interconnection of the IP phone online playing an excellent instrument, the only requirement is to call both sides have to have a computer, and connect to the Internet. This program can achieve the following networking feature : 1. Both the caller is within the same LAN users. Both the caller is different us

H.323协议系列的一部分，用于会话的控制，开发H.323产品必须要懂H.225,这是2000年的版本，对应H.323 V4-H.323 part of the series for the conversational control, product development H.323 H.225 must understand that this is the 2000 version, corresponding H.323 V4