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Common Codes and Elements Defined by ISO/IEC 11801

Written by Julianus Yu

Differences between ANSI/TIA/EIA-568-B and ISO/IEC 11801 include the following:

ISO/IEC 11801 allows for an additional media type for use with backbone and horizontal cabling and 120-Ohm UTP.

The term transition point is much broader in ISO/IEC 11801; it includes not only transition points for under-carpet cable to round cable (as defined by ANSI/TIA/EIA-568-B), but also consolidation-point connections.

Here is some Element Defined by ISO/IEC 11801

Element	Code	Description
Building distributor	BD	A distributor in which building-to-building backbone cabling terminates and where connections to interbuilding or campus backbone cables are made.
Building entrance facilities	BEF	Location provided for the electrical and mechanical services necessary to support telecommunications cabling entering a building.
Campus distributor	CD	Distributor location from which campus backbone cabling originates.
Equipment room	ER	Location within a building dedicated to housing distributors and specific equipment.
Floor distributor	FD	A distributor used to connect horizontal cable to other cabling subsystems or equipment.
Horizontal cable	HC	Cable from the floor distributor to the telecommunications outlet.
Telecommunications closet	TC	Cross-connection point between backbone cabling and horizontal cabling. May house telecommunications equipment, cable terminations, cross-connect cabling, and data-networking equipment.
Telecommunications outlet	TO	The point where the horizontal cabling terminates on a wall plate or other permanent fixture. The point is an interface to the work-area cabling.
Transition point	TP	The location in horizontal cabling of a change of cable form, such as from round to under-carpet cable. Work-area cable Connects equipment in the work area (phones, computers, etc.) to the telecommunications outlet.