Abstract：Research purposes: The studies are done on the main characteristics of communication system design，the main applied innovations and effects after the system being put into use for the Metro Line 2 for the purpose of providing experience and reference to construction of communication system fur urban mass transit in China.
Research methods: The comparison and research are done on the aspects of communication network technology，system constitution for Guangzhou Metro Line 2 accoding to the operational requirements and the development of communication technology.
Research results: The technological choices and network constitution are put forward, which can largely reduce the investment in communications system.
Research conclusions: The study should be done on the problems in designing the communication system when designing a new Metro line. The proposals are made that the skilled and experience integrator should be hired to control the whole construction process of communication system, the UPS of two hours should be equipped to the transmission system， wireless system, telephone system and main clock in control center and LIPS of one hour to the other systems, the main optical cables from car depot to the ground should be laid down in cable pipe and the pipe quantity should meet the long-term requirement, and the rainage system should be installed in rainy area for the manhole, which should be connected with the main drainage system of car depot to solve the problem of ponding in manhole.
王成. 广州地铁二号线通信系统设计的有关问题[J]. 铁道工程学报, 2007, 24(8): 93-98.
WANG Cheng. Issues Related to the Communication System Design for the Guangzhou Metro Line 2. 铁道工程学报, 2007, 24(8): 93-98.
2007, Vol. 24 
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