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Glossary and Abbreviations
555-230-024GL-24 Issue 5 January 1998
G
G3-MA
Generic 3 Management Applications
G3-MT
Generic 3 Management Terminal
G3r
Generic 3, RISC (Reduced Instruction Set Computer)
generalized route selection (GRS)
An enhancement to Automatic Alternate Routing/Automatic Route Selection (AAR/ARS) that
performs routing based on call attributes, such as Bearer Capability Classes (BCCs), in addition
to the address and facilities restriction level (FRL), thus facilitating a Uniform Dial Plan (UDP) that
is independent of the type of call being placed.
glare
The simultaneous seizure of a 2-way trunk by two communications systems, resulting in a
standoff.
GM
Group manager
GPTR
General-purpose tone receiver
grade of service
The number of call attempts that fail to receive service immediately. Grade of service is also
expressed as the quantity of all calls that are blocked or delayed.
ground-start trunk
A trunk on which, for outgoing calls, the system transmits a request for services to a distant
switching system by grounding the trunk ring lead. To receive the digits of the called number, that
system grounds the trunk tip lead. When the system detects this ground, the digits are sent.
GRS
Generalized Route Selection
H
H0
An ISDN information transfer rate for 384-kbps data defined by CCITT and ANSI standards.
H11
An ISDN information transfer rate for 1536-kbps data defined by CCITT and ANSI standards.
H12
An ISDN information transfer rate for 1920-kbps data defined by CCITT and ANSI standards.
handshaking logic
A format used to initiate a data connection between two data module devices.