Key Components Of A Structured Cabling System

Telecom Tech Outlook | Wednesday, March 24, 2021

Structured cabling system comprised of six crucial components. They are horizontal cabling, backbone cabling, work area, telecommunications closet, equipment room, and entrance facility.

Building a structured cabling system is inevitable for the improved performance of different cable deployments. Typically, a structured cabling system consists of cabling and connectivity products that incorporate voice, data, video, and various building management systems. The structured cabling system is based on two standards. One is the ANSI/TIA-568-C.0 of generic telecommunications cabling for customer premises, and another is the ANSI/TIA-568-C.1 of commercial building telecommunications cable for business infrastructures. These standards define how to design, build, and manage a cabling system that is structured. Six key components are included to form a structured cabling system.

Six Subsystems of a Structured Cabling System

Generally speaking, there are six subsystems of a structured cabling system. Here will introduce them respectively for better understanding.

Work Area

Work area refers to space where cable components are used between communication outlets and end-user telecommunications equipment. The cable components often include station equipment (telephones, computers, etc.), patch cables, and communication outlets.

Horizontal Cabling

The horizontal cabling is all the cabling between the telecommunications outlet in a work area and the horizontal cross-connect in the telecommunications closet, including horizontal cable, mechanical terminations, jumpers, and patch cords located in the telecommunications room or telecommunications enclosure, multiuser telecommunications

outlet assemblies, and consolidation points. This type of wiring runs horizontally above ceilings or below floors in a building. Despite the cable types, the maximum distance allowed between devices is 90 meters. Extra 6 meters is allowed for patch cables at the telecommunication closet and in the work area, but the combined length of these patch cables cannot exceed 10 meters.

Backbone Cabling

Backbone cabling is also known as vertical cabling. It offers connectivity between telecommunication rooms, equipment rooms, access provider spaces, and entrance facilities. The cable runs on the same floor, from floor to floor, and even between buildings. Cable distance depends on the cable type and the connected facilities, but twisted pair cable is limited to 90 meters.

A telecommunications Closet (Room & Enclosure)

A Telecommunications closet is an enclosed area like a room or a cabinet to house telecommunications equipment, distribution frames, cable terminations, and cross-connects. Each building should have at least one wiring closet, and the size of the closet depends on the size of the service area.

Equipment Room

The equipment room is the centralized place to house equipment inside building telecommunications systems (servers, switches, etc.) and mechanical terminations of the telecommunications wiring system. Unlike the telecommunications closet, the equipment room houses more complex components.

Entrance Facility

The entrance facility encompasses the cables, network demarcation point, connecting hardware, protection devices, and other equipment connected to the access provider or private network cabling. Connections are between outside plant and inside building cabling.