Some even require plenum rated cables.īut one most important thing is - you must properly install fire-stop material on all openings you make between floors, no matter those are cable ports or direct openings. Most standard require that all riser cable (cable that goes vertically between floors) be riser rated for its fire and smoking rating. This will give you ample room for growth and the ability to rapidly respond to new requirements. If you anticipate using your wiring system for multiple applications, double or even triple each backbone wiring run. The backbone cabling should be of same or higher category and type that meets your performance requirements and the safety and fire protection requirements for your installation.įor example, for Cat 5e horizontal wiring, you should use Cat 5e cable or even higher category such as Cat 6 and Cat 7. :: How is backbone wiring capacity implemented?īackbone wiring should be terminated in the same manner as horizontal cabling. Thus the backbone wiring from each floor may be concentrated in a single master telecom room and the number of repeater jumps minimized. Star wiring is a good choice for Ethernet which must limits repeater jumps.įor large buildings, telecom rooms are often placed in services shaft, one above the other, distances between telecom rooms are minimal. Star wiring: In a star wiring, the back bone wiring connects all hubs from different floors to a center hub.Daisy chain is a good choice for Token-Ring topology, since it provides convenient ring-in and ring-out connections. In a daisy chain wiring, the back bone wiring connects from hub to hub to hub. Backbone wiring then connects the hubs, on to another on different floors. Typically all hubs, concentrators and switches are placed in the telecom rooms which serve all workstations on that same floor. Many call it vertical cabling in contrast to horizontal cabling. In many cases, backbone cabling is actually between wiring closets on the same floor of a building, but the more typical case is the floor to floor wiring in a multi-floor building. All wiring between telecommunication rooms is called as backbone cabling. Backbone cabling may be within one building or between buildings on a campus.
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