网络工程大纲(国外英文资料).docVIP

网络工程大纲(国外英文资料) First, structured wiring Structured Cabling System (Structured Cabling Systems, abbreviated SCS) adopts modular design and layered star topology structure, it can adapt to any building or building wiring System, its representative products are building and building integrated wiring System (Premises Distribution System, abbreviated PDS) Design ideas and principles Buildings in order to protect the interests of investors, can adopt the level of overall planning, step-by-step implementation, wiring one pace reachs the designated position as far as possible the implementation of the integrated wiring project. The specific design principles are as follows: (1) the user is supreme. (2) advanced nature. (3) flexibility and extensibility. (4) standardization. (5) economy Design scope and step The system generally includes the workspace subsystem, horizontal subsystem, management subsystem, main subsystem, subsystem and equipment construction between the subsystems, such as design steps are as follows. (1) obtain the floor plan of the building. (2) analyze user requirements. Generate the problem list. (3) system design. Generate the physical topology technical documentation. (4) wiring design. Generate logical topology, socket and cable index tables, device MAC address and IP address index table and other technical documents. (5) drawing wiring construction drawings. Generate the socket label and the technical document such as the cable label. (6) make a list of wiring materials. The 1.1 workspace subsystem The workspace subsystem is also known as the service area subsystem, which is composed of the rj-45 socket and the device (terminal or workstation) connected to it. The workspace subsystem can be divided into three design levels based on actual needs. (1) the basic model. (2) enhancement. (3) the synthesis. 1.2 level subsystem The horizontal subsystem is also known as the horizontal wiring subsystem. The horizontal wiring subsystem starts from the rj-45 so