Black Box DESKTOP TELCO Spezifikationen PDF herunterladen (Seite 17)

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Structured Cabling System

Horizontal cabling.

The horizontal cabling system encompasses everything

between the telecommunications room cross-connects to the

telecommunications outlets in the work area. It’s called horizontal

because the cable typically runs horizontally above the ceiling or

below the floor from the telecommunications room, which is

usually on the same floor. For details, see pages 16–18.

Backbone cabling.

The backbone system encompasses all the cabling between

telecommunications rooms, equipment rooms, entrance facilities,

and between buildings. For details, see pages 19–20.

Telecommunications room.

The telecommunications room holds the termination equipment

needed to connect the horizontal wiring to the backbone wiring.

A building must contain at least one telecommunications room,

and it should be on the floor it serves. For details, see page 22.

Work area.

The work area consists of all the components between the

telecommunications outlet and the user’s workstation equipment.

For details, see page 21.

Equipment room.

The equipment room houses telecommunications systems,

such as PBXs, servers, and the mechanical terminations. It’s different

than the telecommunications room because of the complexity

of the components. An equipment room may take the place of

a telecommunications room or it may be separate. For details,

see page 23.

Entrance facility.

The entrance facility is the point where the outdoor cable

connects with the building’s backbone cabling. This is usually the

demarcation point between the service provider and the customer-

owned systems. For details, see page 23.

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Black Box DESKTOP TELCO Spezifikationen Seite 17