江西省公用IP电话网可行性研究报告
一九九九年五月
目录
一、可行性研究的依据和范围
依据····························································1
范围····························································2
IP电话的现状、标准、发展及问题·································2
2.1IP电话的现状·····················································2
2.2IP电话标准······················································3
2.3IP电话的发展····················································6
2.4IP电话存在的问题················································8
三、建设IP电话网必要性与可行性····································9
3.1建设IP电话网的必要性···········································9
3.2建设IP电话网的可行性··········································10
3.3简要结论·······················································11
四、IP电话网建设方案··············································11
4.1总体方案························································11
4.2实验网业务类型·················································13
4.3网关及关守的设置方案···········································13
4.4实验网网路组织·················································16
4.5协议与信令·····················································24
4.6IP网关的同步···················································27
4.7号码与地址·····················································27
4.8基本业务流程···················································28
4.9基本通信过程···················································29
4.10拨号程序······················································31
4.11用户身份认证··············
。。。以下略