地铁客运服务英语课件第十单元教材课件moban.ppt

Unit 10 Metro Telecommunication System,地铁通信系统,You will be able to Remember some words about metro telecommunicationIntroduce the composition and profile of metro telecommunication systemAdvised Hours:2 class hours,1.What is the communication system used for?Transmit signals to remote control subway2.Have you seen the communication system equipment in the course of subway?3.Can you take a phone call in the subway?Yes.4.The role of control center is data reception,processing operations of the central nervous system to send.5.The role of switch is the on-off control circuit.6.The role of fiber is provide an optical signal transmission medium.,1.Please list the name of each part of the telecommunication system.subsystems of transmisision,wireless equipment,telephones for public affairs,closed circuit television,special-use telephone,broadcast system and clocks.2.Whats the characteristic of telecommunication system?It is a comprehensive communication network for service use,sending all kinds of information like voice,words,data and pictures.,Situation:You are supposed to introduce the metro telecommunication system in your own city from different aspects:1.metro core 2.service edge3.metro aggregation,