江西省IP电话网可行性研究报告

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1、依据····························································12、范围····························································22、IP电话的现状、标准、发展及问题·································22.1IP电话的现状·····················································22.2IP电话标准······················································32.3IP电话的发展····················································62.4IP电话存在的问题················································8三、建设IP电话网必要性与可行性····································93.1建设IP电话网的必要性···········································93.2建设IP电话网的可行性··········································103.3简要结论·······················································11四、IP电话网建设方案··············································114.1总体方案························································114.2实验网业务类型·················································134.3网关及关守的设置方案···········································134.4实验