Issue link: http://www.e-digitaleditions.com/i/137513
Network Cabling Solutions Appendix Backbone Cabling Provides interconnection between telecommunications rooms, equipment rooms, and entrance facilities. Backbone Cabling System Structure main Cross Connect (mC) Backbone Cabling Entrance Facility Horizontal Cross Connect (HC) Intermediate Cross Connect (IC) Recognized media: maximum Distance (mC to HC): 4-pair 100 Ω Unshielded Twisted Pair (UTP) 90m (295 ft) 4-pair 100 Ω Shielded Twisted Pair (F/UTP) 90m (295 ft) 62.5/125 µm multimode Optical Fiber (Om1) 2,000m (6,560 ft) 50/125 µm multimode Optical Fiber (Om2) 2,000m (6,560 ft) 50/125 µm Laser Optimized multimode Optical Fiber (Om3) 2,000m (6,560 ft) 50/125 µm 850nm Laser Optimized Optical Fiber (Om4) 4,700m (15,420 ft) Single mode fiber can be used anywhere in the network Note: • Patch cords and jumpers at the main cross connect (mC) and the intermediate cross connect (IC) should not exceed 20 m (66 ft.) 216 For product information visit www.hellermann.tyton.com or call 800.537.1512