Definition of Premise Cabling in Network Encyclopedia.
What is Premise Cabling (in computer networking)?
Premise Cabling is the entire wiring system in a building, including cabling, power lines, wiring closets, distribution centers, wall plates, and fixtures. Premise cabling should be installed according to the Electronic Industries Alliance and Telecommunications Industry Association (EIA/TIA) wiring standards and must comply with all state and municipal building codes and requirements.
How It Works
In computer networking, the premise wiring system is a hierarchical system based on the star topology, starting with the equipment room (main cross-connect) that houses the main telecommunications equipment for the particular building, including servers, Private Branch Exchanges (PBXs), and routers. The equipment room contains the facilities for telecommunications signals to enter and leave the building. It can be one room or several rooms on different floors, depending on the building layout and administrative considerations.
From the equipment room, a vertical backbone cable runs up the building riser or elevator shaft, connecting the equipment room with wiring closets (intermediate cross-connects) on each floor. Additional backbone cabling runs horizontally to secondary wiring closets (horizontal cross-connects) if necessary. No further cross-connects should be used; in other words, the hierarchy should be no more than three cross-connects deep.
The wiring closets contain cabinets or racks with patch panels, hubs, switches, and other equipment. Horizontal wiring runs from the patch panels through wall and ceiling spaces to wall plates and distribution boxes to form local area network (LAN) drops in the work areas where computers are set up. Patch cables or drop cables connect computers in the work area to the wall plates and distribution boxes.
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