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目 录
摘要···········································································································································II
1 设计目的·······························································································································1
2 设计要求·······························································································································1
3 设计内容·······························································································································2
3.1 Interne语音通信系统概述 ························································································2
3.2分组交换的特点 ···········································································································2
3.3 IP电话基本结构 ··········································································································3
3.4 IP电话网络组件············································································································5
3.5 IP电话的基本通信过程································································································7
3.6 IP电话的业务流程 ······································································································8
3.7 基于局域网的PC TO PC的可视IP电话的开发 ····················································11
总结与致谢······························································································································15
参考文献··································································································································16
附录一 原理图 ·························································································································17
摘 要
网络技术与多媒体技术的发展，促进了通信技术综合化、数字化、智能化、个人化的发展，使得在单一网络平台上实现语音、数据、图像等多种业务成为可能。综合网络技术与多媒体技术的IP电话技术正是在这一背景下产生的，并得到了迅速的发展，成为语音通信领域中的一个强有力的竞争者。IP电话除了具有采用分组交换技术，提高线路利用率，降低通信费用等优点外，可以实现多种业务的增值，并与多媒体技术相融合，使其在通信领域中处于有利的地位，具有广阔发展前景的根本原因。虽然IP电话的语音质量还不是很完善，但是IP电话技术的发
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