C- Band

A band of frequencies from 4.0 to 8.0 GHz used for both satellite and terrestrial microwave transmission.

C Wire

European term corresponds to North American Sleeve wire.

C&C

Computers and Communications

C/A Code

Clear/Acquisition Code

C/I

Carrier To Interference Signal Ratio

C/I

Cochannel Interference

C/R

Command Response

C2

Command and Control

C3

Command, Control, and Communications

CA

Call Agent

CA

Certificate Authority

CA

Certification Authority

CA

Communications Assistant

Cable Binder

A device that holds multiple cable pairs.

Cable Converter

Cable converters, commonly called a set top box are electronic devices that convert an incoming cable television signal into a form that can be displayed on a video device typically a television or computer. The set-top box is typically located in a customer s home to enable the reception and/or interaction with services on the customer s television or computer.

Cable Entrance Facility (CEF)

The steel, wooden, tile, or plastic duct work or pathway that allows for cabling to enter a building.

Cable Head End

The portion of a cable television communication system that receives, formats, and transmits the carrier signals to the distribution system. Because cable television companies have started to offer two-way telecommunication services such as Internet and telephone service, the head end equipment has been expanded to include voice and data gateways.

This figure shows a diagram of a simple head-end system. This diagram shows that the head-end allows the selection of multiple video sources. Some of these video sources are scrambled to prevent unauthorized viewing before...