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.
The Term Paper on The Ethernet Twisted Pair
Bob Metcalfe of the Xerox Corporation developed the first experimental Ethernet system in late 1972. The goal of the Ethernet was to interconnect the Xerox Alto Aloha Network. The experimental Ethernet was used to link Altos workstations, servers, and laser printers. Data transmission of the Ethernet was 2. 94 Mbps. In 1973, Metcalfe changed the name to 'Ethernet,' to make it clear that the system ...
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.
