Application- a system, the transmission method of which is supported by telecommunications cabling. Unshielded Twisted-Pair- A cable with multiple pairs of twisted insulated copper conductors bound in a single sheath. Shielded Twisted-Pair- A cable surrounded by a twisted braid, foil or both and bound in a single plastic sheath containing balanced twisted-pair conductors that are individually shielded. Fiber-optic Cable- is a cable made up of optical fibers that can transmit large amounts of information at the speed of light. Dark Fiber- is an unused optical fiber available for use in fiber-optic communication.
Coaxial Cable- a cable that consists of a center wire surrounded by insulation and then a grounded shield of braided wire. Plenum- a compartment or chamber to which one or more air ducts are connected and that forms part of the air distribution system. Riser- is a designation for a type of cable run between floors fire-code rating for indoor cable that is certified to pass through the vertical shaft from floor to floor. Rip Cord- a length of string built into optical fiber cables that is pulled to split the outer jacket of the cable without using a blade. Core- is the central part of a single optical fiber in which the light signal is transmitted. The core is typically made up of glass or plastic. Attenuation- a general term in the decrease in power from one point to another. The loss can be electrical signal or light strength.
Noise- is any extraneous signal that interferes with the desired signal normally present or in passing through the system. Headroom- The number of decibels by which a system exceeds the minimum defined requirements. ANSI- is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems and personnel. NFPA- establishes and updates fire protection and prevention safeguards. The NFPA publishes national fire codes, standards, manuals, and recommended processes. FCC- a government agency in charge of regulating all forms of interstate and international communication. NIST- an agency in the technology administration that makes measurements and sets standards as needed by industry or government programs. OSHA- a government agency that regulates workplace safety.
Equipment room- is a centralized space for telecommunications equipment that serves the occupants of the building or multiple buildings in a campus environment. Topology- is the geometric physical or electrical configuration describing a local communication network.
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