Glossary

A telecommunications infrastructure designed for installation outside of any structure.

The level of over-voltage that will trip the circuit breaker in a surge protector.

A method of synchronous bit synchronization. The receiver samples the signal at a much faster rate than the data rate. This permits the use of an encoding method that does not add clocking transitions.

The area in a semiconductor that is doped to have an abundance of electron acceptors in which vacancies in the valence electron level are the dominant current carriers.

PABX Master – Also known as PBX.
A white tailed adaptor, RJ45 Plug to a BT socket with a specific wiring. For normal office extensions routed via the office telephone exchange, PABX.

Bits grouped serially in a defined format containing a command or data message sent over a network. The packet is the major structure of data sent over a network.

The process of breaking messages into packets. Each packet is then routed optimally across the network. Packet sequence numbers are used at the destination node to reassemble packets.

At a cut end, the fraction of the face surface area of a fiber-optic bundle that is fiber core.

Phase Alternate Lines- A coaxial connector. Also known as a belling lee connector.
A push-on coaxial connector that has been traditionally used for TV antenna. PAL connectors are being replaced by F type connectors as required for CATV, SATV and DTV.

The signal-encoding technique used in the Ethernet 100Base-T2 and 1000Base-T media systems.

Specifications established by the FCC as the minimum acceptable protection that communications equipment must provide to the telephone network.

A fiber splicing technique for using non-electro-optical linked access technology for aligning fibers for splicing.

A device that divides an optical input into two or more optical outputs.

Divides light without generating new light.

Cable that is of stranded conductor – See STRANDED