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单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Part B,Part E,Part D,Part A,Part C,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Part B,Part E,Part D,Part A,Part C,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Part B,Part E,Part D,Part A,Part C,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Part B,Part E,Part D,Part A,Part C,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Part B,Part E,Part D,Part A,Part C,单击此处编辑母版标题样,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Part B,Part E,Part D,Part A,Part C,Unit 10 Metro Telecommunication System,地铁通信系统,You will be able to,Remember some words about metro telecommunication,Introduce the composition and profile of metro telecommunication system,Advised Hours:,2 class hours,1. What is the communication system used for?,Transmit signals to remote control subway,2. 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 edge,3. metro aggregation,
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