ip电话软件speakfs 7.2版本，GSM, ADPCM, LPC, and LPC

Siproxd is a proxy/masquerading daemon for the SIP protocol. It allows SIP clients (like kphone, linphone) to work behind an IP masquerading firewall or router.

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.

Bandwidth Monitor是一个纯VB编写的程序，对视屏的处理十分好!-Bandwidth Monitor is a pure VB program to screen the handling is very good!

基于sip的服务器程序，java编写，很不错的-Procedures based on the sip server, java prepared, very good

开放的Voip源代码，实现SIP协议，可用于Voip的开发。-open source code, achieving SIP can be used for Student Development.

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 VoIP 系统时，主要考虑的一个方面就是连接到模拟电话的接口。设计人员必须了解 PSTN 中存在的电话接口要求，因为它们必须在 VoIP 系统中得到支持。本文将重点介绍连接到标准 POTS 电话的两种最常用接口：Foreign eXchange Subscriber (FXS) 与 Foreign eXchange Office (FXO)。重点说明了设计人员在为 VoIP 小区网关的模拟电话接口提供支持时可能面临的某些挑战。-In the development of VoIP system, one aspect of the main considerations is connected to the analog telephone interface. Designers must understand the existing PSTN telephone interface requirements, because they are in the VoIP system must be supported. This article will focus on the standard POTS telephone connected to the two most commonly used interface: Foreign eXchange Subscriber (FXS) and Foreign eXchange Office (FXO). Focusing on the design staff in the Residential Gateway for VoIP analog telephone interface may provide support to some of the challenges faced.

visual C#源码，摄像头捕获,视频会议，网络互通-visual c# video caoture,Video meeting

独立软件.Sip源代码。SIP.NET是.NET Framework和Mono的会话启动协议API。API是用100%托管C代码编写的。

此软件可以很顺利的实现网络对话，这样对网络编程的初学者很有帮助的-software can smooth network dialogue, the network programming beginners helpful!