电话交换系统“公专合一”与“公专分离”模式的技术经济效益分析  

Technical & Economic Profit Analysis on Office-Private Swithings for URT Telephone System

作　　者：黄曼全 

机构地区：[1]深圳市地铁运营分公司,深圳∥工程师518000

出　　处：《城市轨道交通研究》2008年第9期19-24,共6页Urban Mass Transit

摘　　要：在城市轨道交通通信网络中,控制中心、车辆段、停车场以及各个车站处在网络节点的位置上,采用交换设备来实现网络汇接与终端接入。轨道交通系统通常有多个业务独立的电话系统。当前,实现这些电话系统的规划建设有"公专分离"和"公专合一"两种模式。从技术经济效益的角度对两种模式进行分析比较,认为"公专合一"模式更经济可靠。On URT communications network, the control center, vehicle section, parking lot and stations are all on the network nodes, the network tandems and terminals are implemented with switching equipments. Usually, a railway transportation communications sytem requires many individual telephone systems, such as the office telephone system, the dispatch telephone system, the inter-station telephone system, the station telephone system and railway maintenance telephone system, etc. At present, the there are two layout modes for these telephone systems., office-private syncretism switching and office-private separation switchings. With a view to the technological and economic profits, this paper analyzes and compares the two modes and gets a conclusion that the office-private syncretism switching mode is more economic and reliable.

关 键 词：公务电话交换 专用电话交换 电话公网 虚拟专网 调度电话 技术经济效益 

分 类 号：TN916.4[电子电信—通信与信息系统] TP368.5[电子电信—信息与通信工程]