Glossary

Main feeder connecting BTS / Node B to the antenna / MHA.

Most commonly an IEC C13 Female to UK Mains plug. However there can be many variations so check this with the customer.
(see Kettle lead)

A method of encoding a LAN in which each bit time that represents a data bit has a transition in the middle of the bit time. Manchester coding is used with 10Mbps Ethernet (10Base-2, 10Base-5, 10Base-F, and 10Base-T) LANs.

A device used to remove high-order modes caused by overfilling in a length of optical fiber for insertion loss measurements.

The allowance for attenuation in addition to that explicitly accounted for in system design.

The concurrent and simultaneous splicing of multiple fibers at one time. Currently mass splicing is done on ribbon cable, and the standard seems to be ribbon cable with 12 fibers. Special splice protectors are made for this purpose, as well as special equipment for splicing.

FULL Master - For a direct line from the telephone company and not via the office telephone exchange, PABX

A pulse dispersion that results from each wavelength traveling at a speed different from other wavelengths through an optical fiber. See also chromatic dispersion.

When referring to Ethernet LANs, the transceiver in Ethernet networks.

A manufacturer

Mobile Broadband Network Limited

Used with Ethernet systems; it is the connector used to make the mechanical and electrical interface between a transceiver and a media segment. An 8-pin RJ-45 connector is the MDI for Ethernet implemented using UTP.

A measurement of how reliable a hardware component is. Usually measured in thousands of hours.

The BT Ethernet used by MBNL

With respect to fiber-optic cables, a splice in which fibers are joined mechanically (e.g., glued, crimped, or otherwise held in place) but not fused together using heat. Mechanical splice is the opposite of a fusion splice in which the two fiber ends are butted and then joined by permanently bonding the glass end-faces through the softening of the glass, which is fused together.