Glossary

A problem that exists when two items with dissimilar static electrical charges are brought together. The static electricity jumps to the item with lower electrical charge, which causes ESD; ESD can damage electrical and computer components.

A source of optical power.

Converting analog data into digital data by combining timing and data information into a synchronized stream of signals. Encoding is accomplished by representing digital 1s and 0s through combining high- and low signal voltage or light states.

The quality of a fiber

(1) The distance between the ends of two joined fibers. The end separation is important because the degree of separation causes an extrinsic loss, depending on the configuration of the connection. (2) The separation of optical fiber ends, usually taking place in a mechanical splice or between two connectors.

The optical signal loss experienced between the transmitter and the detector due to fiber quality, splices, connectors, and bends.

For radiation. Expressed in joules per square meter. Sometimes called irradiance.

A room in a building where antenna, public, and private network service cables can enter the building and be consolidated. Should be located as close as possible to the entrance point. Entrance facilities are often used to house electrical protection equipment and connecting hardware for the transition between outdoor and indoor cable. Also called an entrance room.

The location where telecommunications enter a building through an exterior wall, a concrete floor slab, a rigid metal conduit, or an intermediate metal conduit.

A glue that cures when mixed with a catalyzing agent.

A connector that does not require the use of epoxy to hold the fiber in position.

ELFEXT is the name for the crosstalk signal that is measured at the receiving end and equalized by the attenuation of the cable.

Cable or cable assembly used to connect telecommunications equipment to horizontal or backbone cabling systems in the telecommunications room and equipment room. Equipment cables are considered to be outside the scope of cabling standards.

Part of the cabling structure, typically between the distribution frame and the equipment.

A centralized space for telecommunications equipment that serves the occupants of the building or multiple buildings in a campus environment. Usually considered distinct from a telecommunications closet because it is considered to serve a building or campus; the telecommunications closet serves only a single floor. The equipment room is also considered distinct because of the nature of complexity of the equipment that is contained in it.