NGN与软交换概述华为VIP专享VIP免费

NGN与软交换概述 i 目 录 第1 章 NGN 简介 .......................................................................................................................... 1 1.1 传统PSTN 网络 .....................................................................................................................1 1.2 NGN 概念及应用 ....................................................................................................................2 1.2.1 NGN 网络架构 .............................................................................................................2 1.2.2 NGN 网络特点 .............................................................................................................3 1.2.3 NGN 的目标 .................................................................................................................5 第2 章 NGN 关键技术介绍 ........................................................................................................... 6 2.1 软交换技术 .............................................................................................................................6 2.1.1 什么是软交换？ ...........................................................................................................6 2.1.2 引入软交换的意义 .......................................................................................................8 2.1.3 软交换的参考模型 .......................................................................................................9 2.1.4 软交换的对外接口 .................................................................................................... 10 2.1.5 软交换硬件平台 ........................................................................................................ 11 2.2 媒体网关技术 ...................................................................................................................... 12 2.3 媒体网关控制技术 .............................