Glossary

A standard lead used for internet connections.  Connecting PC/ Modem to BT outlet.  Using 2 Pair telephone cable (CW1308) terminated with RJ11 Plug on both ends.

A six-wire modular jack used by the DEC wiring system. The MMJ has a locking tab that is shifted to the righthand side.

Equipment is said to be modular when it is made of plugin units that can be added together to make the system larger, improve the capabilities, or expand its size. Faceplates made for use with structured cabling systems are often modular and permit the use of multiple types of telecommunications outlets or modular jacks such as RJ-45, coaxial, audio, or fiber.

A female telecommunications interface connector. Modular jacks are typically mounted in a fixed location and may have four, six, or eight contact positions, though most typical standards-based cabling systems will have an eight-position jack. Not all positions need be equipped with contacts. The modular jack may be keyed or unkeyed so as to permit only certain types of plugs to be inserted into the jack.

(1) To convert data into a signal that can be transmitted by a carrier. (2) To control.

(1) Coding of information onto the carrier frequency. Types of modulation include amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). (2) When light is emitted by a medium, it is coherent, meaning that it is in a fixed-phase relationship within fixed points of the light wave. The light is used because it is a continuous, or sinusoidal, wave (a white or blank form) upon which a signal can be superimposed by modulation of that form. The modulation is a variation imposed upon this white form, a variation of amplitude, frequency, or phase of the light. There are two basic forms of this modulation: one by an analog form, another by a digital signal. This signal is created in the form of the

Light having only one color, or more accurately only one wavelength.

Multiple-Operator Radio Access Network configuration

A standards group operating under the ISO that develops standards for digital video and audio compression.

Multi Radio Combiner - combines the 3G H3G and T-Mobile sub bands onto a common feeder / antenna system. (supplied by Nokia)

Jumper running from the MRC toward the main feeder or 2G/3G diplexor

A duplex fiber-optic connector that looks similar to the RJ-45-type connector.

Used to interconnect fiber-optic patch panels from point to point.

An application that communicates to more than one of the human sensory receptors such as audio and video components.

Transmission of multiple modes of light. See also mode.