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Glossary Section "G" ( Definitions )

Guide -  Select first letter of word:
0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

G.703 An ITU standard for the physical and electrical characteristics of various digital interfaces, including those at 64 kbps and 2.048 Mbps.

G.723.1 An ITU standard for voice compression.

G.lite (also known as Universal ADSL, and referred to as G.992.2 by the ITU ), allows for high-speed "always on" digital communications over standard copper phone lines. Unlike standard ADSL, G.lite doesn't require a splitter to be installed at the customer location.  Unlike standard ADSL, G.lite works with the DLC.  Standard ADSL can provide downstream speeds of up to 8-Mbps and upstream speeds of 1.5-Mbps but  G.lite is limited to 1.5-Mbps downstream and 512-Kbps upstream.

gateway The original Internet term for what is now called router or more precisely, IP router. In modern usage, the terms "gateway" and "application gateway" refer to systems which do translation from some native format to another. Examples include X.400 to/from RFC 822 electronic mail gateways.

GateD Gateway Daemon. A popular routing software package which supports multiple routing protocols. Developed and maintained by the GateDaemon Consortium at Cornell University. Pronounced "gate-dee."

GBIC GigaBit Interface Converter refers to the device or module which converts between  optical and electrical signals. Generally this is a module in a switch.

GBPS Giga (1 billion) Bits per Second

GFP Generic Framing Procedure

GHz is an abbreviation for gigahertz or 1 billion cycles per second. This term is used both in microprocessors as a measurement of their clock speed and in wireless technology where it is an indication of the cycles in a specific radio frequency.

Gigabit  1,000,000,000 bits (1 billion)

Gigabit Ethernet A 1 Gbps standard for Ethernet.

GIX Global Internet eXchange. A common routing exchange point which allows pairs of networks to implement agreed-upon routing policies. The GIX is intended to allow maximum connectivity to the Internet for networks all over the world. See CIX, FIX, MAE.

GNSS Global Navigation Satellite System

GOSIP Government OSI Profile. A U.S. Government procurement specification for OSI protocols. There is talk about having TCP/IP be part of GOSIP too.

GBPS Gigabits per second

Gopher The Internet Gopher is a distributed document delivery system. It allows a neophyte user to access various types of data residing on multiple hosts in a seamless fashion.

group 4 A high-speed (56 kbps) facsimile protocol specific to ISDN.

GPON Gigabit Passive Optical Networking

GSM Global System for Mobile communications uses a narrowband TDMA which allows as many as eight simultaneous calls on the same transmission frequency. 

gTLD generic Top Level Domain (not associated with country code).

gTLD-MoU Generic Top Level Domain Memorandum of Understanding. A document produced by the IAHC and signed by a number of organizations in Geneva on May 1, 1997.

GUI Graphical User Interface

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