Black Box DESKTOP TELCO Especificaciones descargar pdf (Pagina 23)

Wiring Color Codes

Wire Color Pair Tip/Ring T568A Jack Pin # T568B Jack Pin #

White/Blue 1 Tip 1 5 5

Blue/White 1 Ring 1 4 4

White/Orange 2 Tip 2 3 1

Orange/White 2 Ring 2 6 2

White/Green 3 Tip 3 1 3

Green/White 3 Ring 3 2 6

White/Brown 4 Tip 4 7 7

Brown/White 4 Ring 4 8 8

Structured Cabling System

724-746-5500 • blackbox.com

Work area

The work area consists of all the components

between the telecommunications outlet and the

user’s desktop workstation equipment. This covers:

• Telecommunications outlets, including

wallplates, faceplates, surface-mount boxes, etc.

• Patch cables.

• Adapters, including connectors, and modular

jacks.

• Workstation equipment, such as PCs, telephones,

printers, etc. although they aren’t included in

the standard.

The work area should be well managed even

though it is designed for frequent changes. There are

a few specific recommendations in TIA/EIA-568-B.1:

• You should install a minimum of two tele-

communications outlets in each work area.

– The first outlet shall be a 100-ohm,

8-position modular jack, CAT3 or higher.

It’s very advisable to use CAT5e or higher.

– The second outlet can be another 100-ohm,

8-position modular jack (minimum CAT5e

or CAT6), or...

– A 2-fiber, 62.5- or 50-micron fiber SC, ST,

or other small-form factor duplex fiber

connector.

• UTP wiring should follow T568A or T568B

schemes. (See right.)

• The 4-pair UTP patch cable from the

telecommunications outlet to the workstation

equipment should be no more than 5 meters

(16.4 ft.).

• Make sure the equipment cords, patch

cables, and modular jacks all have the

same performance rating.

• Follow standard installation practices and

maintain proper pair twists, bend radius, etc.

• Use different pathways for electrical wiring

and structured cabling.

• Estimate pathway capacity at 20–40% fill.

• Run an independent pathway to control centers,

reception areas, and other high-activity spaces.

• An electrical outlet should be installed within

3 feet (9.1 m) and at the same height.

T568A and T568B pinning.

There are two approved pinning methods: T568A

and T568B. The T568A scheme is the one recognized

and used by the U.S. government. The T568A pinning

is also common in Canada and in other parts of the

world.

The T568B pinning is the one used by AT&T

and

is the de facto standard in the U.S.

By the way, the T stands for termination, and not

TIA as commonly thought.

Whichever scheme you choose, stick to it. All

pin/pair assignments must conform to one standard

or the other. Mixing the two can cause crossed pairs,

which just doesn’t work. In addition, you must follow

established telecommunications cabling color

schemes.

T568A

T568B

Pair 1

Pair 2

Pair 3

Pair 4

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 47 48

Comentarios a estos manuales

Sin comentarios

Black Box DESKTOP TELCO Especificaciones Pagina 23

Comentarios a estos manuales

Relacionado con productos y manuales para Redes Black Box DESKTOP TELCO