User's Manual Part 6

B-2 Appendix B – TIA/EIA 568-A Cabling Standard
Horizontal Wiring
The horizontal cable is the portion of the cabling system which extends from the
work area outlet to the telecommunications closet. The horizontal cabling is a star
topology, with a maximum cabling run of 90 meters (295 feet), independent of
media type.
Voice Data
4-pair 100 ohm UTP cable 4-pair 100 ohm UTP/STP
2-pair 150 ohm STA
62.5/125
µ
m fiber optic cable
The horizontal cable amounts to the greatest quantity of individual cables in the
building. Although the TIA/EIA 568-A standard helps limit cabling options,
consideration should be given to media type in order to support possible future
needs. The cable selected should accommodate more than one network planning
period.
Backbone Wiring
The backbone cabling provides the interconnection between the tele-
communications closets and the equipment rooms and entrance facilities. The
backbone cabling is also a star topology with the maximum cable length being
media and applications dependent.
The backbone cable is typically second to horizontal cables in terms of amount of
cable deployed. The cable selected should accommodate a minimum of one to
several network planning periods.