FCC-Federal Communications Commission issue guidelines that govern the installation of telecommunications cabling and design of communication devices built or used in the United States. It also publishes numerous reports and orders that deal with specific issue regarding communications cabling electromagnetic emissions and frequency bandwidth.
The National Fire Protection Association (NEPA) international nonprofit membership organization representing over 65,000 members and 100 countries now sponsors the NEC as well as other recommdations for a variety of safety concerns.
Fiber-Optic Cable-cable containing one or more optical fibers that are used to carry light.
Dark Fiber-dark fiber is optical infrastructure that is currently in place but not being used.
Coaxial Cable-cable that has an inner conductor surrounded by a tubular insulating by a tubular conducting shield. In that dimensions of the cable are controlled to give precise, constant conductor spacing, which is needed for it to function efficiently as radio frequency transmission line.
Plenum-is a separate space provided for air circulation for heating, ventilation and air and typically provided in the space between the structural ceiling and drop down ceiling.
Riser-length of vertically oriented piping used to deliver fluid, gas, or electrical signals or power upward.
Rip Cord-of an optical cable, a parallel cord of strong yarn that is situated under jackets of the cable for the purpose of facilitating jacket removal preparatory to splicing or breaking out.
Core-of the conventional optical fiber is a cylinder of glass or plastic that runs along the fibers length
Attenuation-loss of signal strength measured in decibels.
Noise-unwanted electrical energy that degrades the quality of signals and data.
Headroom-refers to the amount by which the signal-handling capabilities of an audio-system exceed a designated level known as permitted maximum level.