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这个网络电话程序是linux下，用C语言实现的。它既不是实现的H.323 或 SIP协议, 也没有使用RTP协议，更没有使用到任何其它第三方软件，不过，它确实工作的很好。通话话音质量非常不错。

exosip协议栈及其在软件电话中的应用，适合初学者，基于sip协议的开发的一个详细的需求分析

Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many audio and video codecs, and is interoperable with other SIP compliant software and also with Microsoft NetMeeting

A software input panel, a virtual keyboard for windows mobile/PocketPC. It is a undochable floating SIP with only numeric input for calculators etc.. Uses bitmap buttons.

RFC2543中文文档，学习SIP编程的基础东东，把这个搞懂，SIP就学会了~

本书是英文版，但内容非常不错，本书目录如下： Table of Contents SIP—Understanding the Session Initiation Protocol, Second Edition Foreword to the First Edition Preface to - the Second Edition Preface to - the First Edition Chapter 1 - SIP and the Internet Chapter 2 - Introduction to SIP Chapter 3 - ...

Asterisk SIP 服务器入门资料

Convergence between the two largest networks (Telecom and IP) is taking place very rapidly and at diff erent levels: (1) network level: unifi cation of IP networks with traditional Telecom networks through evolving standards (Session Initiation Protocol (SIP), Realtime Transfer Protocol (RTP), SS7, ...

常用芯片DIP SOT SOIC QFP电阻电容二极管等3D模型库 3D视图封装库 STEP后缀三维视图（154个）:050-9.STEP0805R.STEP1001-1.STEP1001-2.STEP1001-3.STEP1001-4.STEP1001-5.STEP1001-6.STEP1001-7.STEP1001-8.STEP103_1KV.STEP10X5JT.STEP1206R.STEP13PX2.STEP15PX2.STEP20P插针.STEP25V1000UF.STEP3296W.STEP35V2200UF.STEP3 ...

Altium Designer常用器件集成库PCB封装库原理图库3D库元件库集成库原理图器件型号列表：76个13W3                2N7002              74HC0474HC0874HC244D74HC595             74LS138  ...