Interconnection World Glossary: G.7xx, A family of ITU standards for audio compression, G.dmt, Another term for full-time ADSL using Discrete Multitone Modulation, G.Lite, Also known as Universal ADSL (UADSL),DSL Lite or ADSL Lite
CONNECTIONS, TERMINATIONS, ACRONYMS & FIBER OPTICS GLOSSARY
Interconnection Glossary


INTERCONNECTION GLOSSARY

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G

G.7xx
A family of ITU standards for audio compression

G.dmt
Another term for full-time ADSL using Discrete Multitone Modulation

G.Lite
Also known as Universal ADSL (UADSL), DSL Lite or ADSL Lite

G.SHDSL
Single paid High-bit-rate Digital Subscriber Line

GAN
Global Area Network

Gb
Gigabit

GB
Gigabyte

GBH
Group Busy Hour

Gbps
Gigabits per second; Gigabytes per second

GCAC
Generic Connection Admission Control

GCRA
Generic Cell Rate Algorithm

GCT
Greenwich Civil Time

GDF
Group Distribution Frame

GDP
Gateway Discovery Protocol

GEO
Geostationary/Geosynchronous Earth Orbit

GERAN
GSM Edge Radio Access Network

GETS
Government Emergency Telecommunications Service

GGP
Gateway-to-Gateway Protocol

GGSN
Gateway GPRS Support Node

GHz
Gigahertz

GHOST
GSM Hosted SMS Teleservices

GIAC
Global Information Assurance Certification

GOF
Graphic Interchange Format

Giga
One billion (US)

Gigabit
One billion bits. (See Gb.)

GII
Global Information Infrastructure

GIIF
Global Integrated Services Digital Network Industry Forum

GIX
Global Internet eXchange

GFP
Global Functional Plane

GMCF
Global Mobile Commerce

GMII
Gigabit MII

GMPCS
Global Mobile Personal Communications by Satellite

GMSK
Gaussuian Minimum Shift Keying

GMT
Greenwich Mean Time

GNU
A recursive acronym for “GNU’s Not Unix,” a Unix-like operating system

GOS
Grade of Service

Gosip
Government OIS Procurement

.gov
“Government;” one of the top-level Internet domain names

GPRS
General Packet Radio Service

GPS
Global Positioning System

GR-303
Generic Requirement 303

GRE
Generic Routing Encapsulation (Cisco invention)

GS
Grade of Service

GSM
Global System for Mobile Communication

GSM 1800
Global System for Mobile Communication 1800 MHz

GSM 1900
Global System for Mobile Communication 1900 MHz

GSM 900
Global System for Mobile Communication 900 MHz

GSMA
Global System for Mobile Association

GSTN
General Switched Telephone Network

G/T
Antenna Gain-to-Noise-Temperature

GT
Global Title (SS7)

gTLD
Generic Top-Level Domain name

GTS
Global Telecommunications Society

GTT
Global Title Translation

GUI
Graphical User Interface

“G” Dimension
Dimension of the crimped portion of a connector measured between two opposite points on the crimped surface. (Also called “T Dimension.”)

Gain
Increased signal power, usually the result of amplification.

Gang Disconnect
A connector that permits the rapid and simultaneous connection and disconnection of two or more electrical circuits.

Gas-Tightness
The characteristic of a contact that is impervious to ingress by corrosive gases.

Gateway
A special node that interfaces two or more dissimilar networks, providing protocol translation between the networks.

Globule Test
A solderability test that is specifically for component leads. The time required for a globule of solder to completely wet around a component lead is measured and recorded and then compared against a known standard. This particular test requires a certain amount of human evaluation.

Glow
The sustained light and heat from a poor or broken connection or circuit.

Graded Index
An optical fiber core that has a refractive index that is changed in a systematic way from center to edges to decrease modal dispersion.

Graphite Fibers
Sometimes used as a filler in composite connectors, graphite fibers are high-strength, high-modulus fibers made by controlled carbonization and graphitization of organic fibers (usually rayon, acrylonitrile or pitch). The fiber consists principally of carbon, which is amorphous, and a lesser amount of graphite, which has a hexagonal crystalline structure. The percentage of graphite in the fibers depends essentially on the final processing temperature. As the final processing temperature is increased, the percentage of graphite is increased. The three most popular precursors are polyacrylonitrile (PAN), pitch, and staple rayon fibers.

Grid
An orthogonal network of two sets of parallel equidistant lines used for locating points on a printed board. Connections should be located on the cross-points of the gridlines.

Grid-Spaced
Contacts in a multiple-contact connector or on the edge of a PC board that are spaced equally in a rectangular pattern.

Grommet
(1) A rubber seal used on the cable side of a multiple-contact connector to seal the connector against moisture, dirt or air. (2) An insulator, usually of elastomer material, that covers the rear portion of the contacts and a short length of the incoming wire.

Groove
Slot or cavity in a connector that bears directly on the cable. Also, the depression in a crimping die that holds the connector during crimping.

Ground Plane
A conductor layer or portion of conductor layers used as a common reference point for circuit returns, or heat sinking.

Guide Pin
A pin or rod extending beyond the mating face of a 2-piece connector, designed to guide the closing or assembly of the connector to assure proper mating of contacts and to prevent damage of these contacts caused by mismating of the connector halves.

Gusset
The transition between the terminal tongue and conductor barrel.


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