(The actual situation of the building: a building with many floors, a large area and a variety of functions. It integrates modern buildings such as office, accommodation, restaurants and entertainment, and a fast, convenient and accurate information network is one of the important symbols of modern buildings. The design takes into account the actual conditions of the coexistence of multiple functions of the building, as well as the user's requirements for the system, as well as its long-term future development. Based on the design specifications of Lucent Technologies, the design is based on the actual conditions of Guangzhou Building. The wiring of information points is designed based on the functions of the campus and the distribution of information points provided by users. The main distribution frame (MDF) is located in the computer room on the 5th floor, and the distribution line room (IDF) is located on the 12th floor (IDF1) and 25th floor (IDF2). That is, there are about 26 information points per floor. The main distribution room (MDF) and the distribution line (IDF) are each connected with a multimode 6-core indoor optical fiber (LGBC-006D-LRX). Based on the information provided by the customer, Guangzhou Building has a total of 660 computer information points, including: 8th floor to 32nd floor, 26 computer information points on each floor, and 10 computer information points on the 33rd floor.)