Table of Contents
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G
G-PDU
Gateway
GBIC
GGSN
GI Interface
Global Domain
GMT (Greenwich Mean
Time)
Gn Interface
Gp Interface
GPRS
Group Expression
Objects
Groups
GRX
GSM
GTP
Copyright © 2010, Juniper Networks, Inc.
A G-PDU is a user data message. It consists of a T-PDU plus a GTP header.
Also called a router, a gateway is a program or a special-purpose device that transfers IP
datagrams from one network to another until the final destination is reached.
A Gigabit Interface Connector (GBIC) is the kind of interface module card used on some security
devices for connecting to a fiber optic network.
Gateway GPRS Support Node.
The interface between a GSN and an external network or the Internet.
A domain is a logical grouping of devices, their policies, and their access privileges. The global
domain is the top level, or root domain, that contains all subdomains.
GMT is the Greenwich, England mean solar time. GMT is also known as Universal Time and is
used for calculating time worldwide.
The interface between two GSNs within the same PLMN.
The interface between two GSNs located in different PLMNs.
General Packet Radio Service. A packet-based technology that enables high-speed wireless
Internet and other data communications. GPRS provides more than three to four times greater
speed than conventional GSM systems. Using a packet data service, subscribers are always
connected and always online so services are easy and quick to access.
A group expression object represents a statement that sets conditions for authentication
requirements, enabling you to combine multiple external user objects. You can create group
expressions using the operator OR, AND, or NOT to combine user objects, user group objects,
or other group expressions.
A group organizes previously-created devices into user-defined groups that make it easier for
you to configure and manage devices in your domain. Groups enable you to execute certain
NSM operations on multiple security devices at the same time.
GPRS Roaming Exchange.
Global System for Mobile Communications.
GPRS Tunneling Protocol.
Appendix A: Glossary
831
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