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Instructor
Note |
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The
purpose of this target indicator is to introduce the size
standards for wiring closets. In your structured cabling
installation, the wiring closets may have already been
determined or may already exist. In this case you can have
the students verify that the closets meet the standard. |
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TIA/EIA-568-A specifies that, in an Ethernet LAN, the
horizontal cabling runs must be attached to a central point in a star topology. The
central point is the wiring closet, and is where the patch panel and the hub must be
installed. The wiring closet must be large enough to accommodate all of the equipment and
wiring that will be placed in it, and include extra space to accommodate any future
growth. Naturally, the size of the closet will vary with the size of the LAN, and the
types of equipment required to operate it. A small LAN needs only a space the size of a
large filing cabinet, while a massive LAN requires a whole room. TIA/EIA-569 specifies that each floor must have a minimum of one
wiring closet and that additional wiring closets should be provided for each 1,000 m2,
when the area of the floor that is served exceeds 1,000 m2, or the horizontal
cabling distance exceeds 90 m.
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