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Glossary

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Term Main definition
C

The symbol for the speed of light in a vacuum.

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C

The symbol for both capacitance and Celsius. In the case of Celsius, it is preceded by the degree symbol (

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C7 Power Lead

C7 Power Lead - A lead that is made up with a UK Mains Plug on one end and a 2 pin figure of 8 on the other end. C7 is another name for a Female Figure of 8 connector.

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C7 Socket

Also known as IEC 320 C7 Female or Figure of 8, 2 Pin contact socket 2.5 AMP

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C8 Plug

Also known as IEC 320 C8 Male or Figure of 8, 2 Pin contact plug 2.5 AMP

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Cable

(1) Copper: A group of insulated conductors enclosed within a common jacket. (2) Fiber: One or more optical fibers enclosed within a protective covering and material to provide strength.

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Cable assembly

A cable that has connectors installed on one or both ends. If connectors are attached to only one end of the cable, it is known as a pigtail. If its connectors are attached to both ends, it is known as a jumper. General use of these cable assemblies includes the interconnection of multimode and single-mode fiber optical cable systems and optical electronic equipment.

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Cable duct

A single pathway (typically a conduit, pipe, or tube) that contains cabling.

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Cable entrance conduits

Holes or pipes through the building foundation, walls, floors, or ceilings through which cables enter into the cable entrance facility (CEF).

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Cable entrance facility (CEF)

The location where the various telecommunications cables enter a building. Typically this location has some kind of framing structure (19-inch racks, or plywood sheet) with which the cables and their associated equipment can be organized.

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Cable management system

A system of tools, hold-downs, and apparatus used to precisely place cables and bundles of cables so that the entire cabling system is neat and orderly and that growth can be easily managed.

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Cable modem

A modem that transmits and receives signals usually through copper coaxial cable. Connects to your CATV connection and provides you with a 10Base-T connection for your computer. All of the cable modems attached to a cable TV company line communicate with a cable modem termination system (CMTS) at the local CATV office. Cable modems can receive and send signals to and from the CMTS only and not to other cable modems on the line. Some services have the upstream signals returned by telephone rather than cable, in which case the cable modem is known as a telco-return cable modem; these require the additional use of a phone line. The theoretical data rate of a CATV line is up to 27Mbps on the download path and about 2.5Mbps of bandwidth for upload. The overall speed of the Internet and the speed of the cable provider

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Cable plant

Consists of all the copper and optical elements, including patch panels, patch cables, fiber connectors, and splices, between a transmitter and a receiver.

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Cable pulling lubricant

A lubricant used to reduce the friction against cables as they are pulled through conduits.

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Cable rearrangement facility (CRF)

A special splice cabinet used to vertically organize cables so that they can be spliced easier.

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