中国电信铁路电力段集群调度及定位服务系统中国电信股份有限公司XX省分公司2012-1目录一、前言..............................................................................................................................1QChat技术简介............................................................................................................................1二、解决方案.....................................................................................................................21、建设思路.................................................................................................................................22、系统设计.................................................................................................................................22.1系统设计原则.............................................................................................................................22.2、系统整体结构组成...............................................................................................................42.2.1系统网络拓扑结构..................................................................................................................42.2.2系统组网方案..................................................................................................................52.2.3技术路线..........................................................................................................................61、美国全球卫星定位系统(USGlobalPositioningSystem)..................................................62、CDMA2000EV-DORev.A网络技术..........................................................................................63、QChat技术..................................................................................................................................62.3、系统软、硬件组成........................................................................................................72.3.1调度台系统..............................................................................................................................72.3.2手持终端..................................................................................................................................92.3.3车载终端................................................................................................................................12A、车载终端外观..........................................................................................................................12B、车载终端概述..........................................................................................................................12C、车载终端技术参数...................................................................................................................13三、系统功能...................................................................................................................131、手持终端功能........................................................................................................................131.1手持终端功能....................................................................................................................131.1.1通信对讲功能................................................................................................................131.1.2卫星定位功能..........
