(In the information society, in a modern building, in addition to telephone, fax, air conditioning, fire protection, power lines, lighting lines, computer network lines are also indispensable. The object of the wiring system is the transmission network within the building or building to connect voice and data communication equipment, switching equipment and other information management systems to each other and to connect these equipment with external communication networks. It includes civil cables and related equipment connection measures between the internal and external lines (network lines, telephone office lines) of the building. The wiring system is composed of many components, mainly including transmission media, line management hardware, connectors, sockets, plugs, adapters, transmission electronic circuits, electrical protection facilities, etc., and these components are used to structure various subsystems.
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