Usage and usage are mainly configured according to the number of overall network points or the number of network points on this floor (and adjacent floors, depending on how the system diagram is designed). Different buildings, different system designs, the distribution frame between the main equipment will be different. For example, if a building has only four floors, the main equipment room is set on the first floor, and the network points on all floors enter the equipment room, then the number of patch panels is equal to the number of all network points/distribution frame ports in the building (24 port, 48 ports, etc.), and add a certain margin; if a building has 9 floors, and the main equipment room is set on the 4th floor, in order to avoid excessively long cables, it is possible to have sub-equipment rooms on each floor , and there is a switching device. Then the patch panel between the main equipment is equal to the number of network points on the 4th floor / the number of ports on the patch panel (24 ports, 48 ports, etc.)