Structured Cabling Overview

Structured Cabling (from Wikipedia) is building or campus telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems.

Structured cabling falls into six subsystems:

Entrance Facilities are where the demarcation point is - where the telephone company network ends and connects with the on-premises wiring at the customer premises.


Equipment Rooms house equipment and wiring consolidation points that serve the users inside the building or campus.


Backbone Cabling connects between the equipment/telecommunications rooms, so named because the rooms are typically on different floors.


Horizontal Cabling wiring can be IW (inside wiring) or plenum cabling and connects telecommunications rooms to individual outlets or work areas on

the floor, usually through the wireways, conduits or ceiling spaces of each floor.


Telecommunications Rooms or Telecommunications Enclosure connects between the backbone cabling and horizontal cabling.


Work-Area Components connect end-user equipment to outlets of the horizontal cabling system.

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