在windows环境应用，监控voip框架中的关守模块(gatekeeper)的图形化界面程序。-windows in environmental applications, monitoring framework of the voip gatekeeper module (gatekeeper) graphical interface procedures.

vovada公司根据sip协议开发的关于voip通话的协议栈的源代码sip-1.3.0版-vovada companies under the development agreement sip voip calls on the protocol stack source code sip-version 1.3.0

关于视频会议的好-video conferencing on a good Dongdong

Java Secure RTP source code

IP电话演示，Delphi7编译通过-IP telephony demonstration compile Delphi7

sip对sip的体系结构进行了分析，对初学sip的有很大的帮助。-sip to sip architecture analysis for beginner sip of great help.

This project contains a SIP stack and server applications built on top of the stack, examples of which are: Stateless Proxy, Registrar,NAT Keepalives,MWI Notifier server. The server applications have been designed to work in association with Asterisk. -This project contains a SIP stack and server applications built on top of the stack, examples of which are: Stateless Proxy, Registrar, NAT Keepalives, MWI Notifier server. The server applications have been designed to work in association with Asterisk.

这里有的被压缩和解压缩编码解码器附带 HawkVoice 与实际的语音样本。原始的 u 法编码样本被编码和解码回你法进行比较。

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.

SIP协议栈开发（minisip）