Gateway
Any mechanism for providing access to another network. This function may or may not include protocol conversion.

GATS
General Agreement on Trade in Services.

GDP
Gross domestic product.
The market value of all final goods and services produced within a nation in a given time period.

GMPCS
Global mobile personal communications by satellite.
Non-geostationary satellite systems that are intended to provide global communication coverage to small handheld devices.

GNI
Gross national income.
The market value of all final goods and services produced in a nation’s economy, including goods and services produced abroad. GNI, in constant prices, differs from GNP in that it also includes a terms-of-trade adjustment, and gross capital formation, which includes a third category of capital formation: net acquisition of valuables.

GNP
Gross national product.
The market value of all final goods and services produced in a nation’s economy, including goods and services produced abroad.

GPRS
General packet radio service.
This is a mobile data service available to users of GSM mobile phones. It is often described as “2.5G”, that is, a technology between the second (2G) and third (3G) generations of mobile telephony. It provides moderate-speed data transfer, by using unused TDMA channels in a GSM network.

GPS
Global positioning system.
Refers to a “constellation” of 24 “Navstar” satellites, launched initially by the United States Department of Defense, that orbit the Earth and make it possible for people with ground receivers to pinpoint their geographic location. The location accuracy ranges from 10 to 100 metres for most equipment. A Russian system, GLONASS, is also available, and a European system, Galileo, is under development.

GSM
Global system for mobile communications.
Digital mobile standard developed in Europe, and currently the most widespread 2Gdigital mobile cellular standard. GSM is available in over 170 countries worldwide. For more information, see the website of the GSM Association at: www.gsmworld.com

GSR
ITU Global Symposium for Regulators, at: www.itu.int/ITU-D/ treg/bestpractices.html