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Glossary:
338
Installation and Upgrades for G700 with S8300 or S8700
555-234-100 — Issue 3 — May 2003
FTP
See
File Transfer Protocol (FTP).
FX
See
foreign exchange (FX).
G
G.711
A mu-law or an a-law, 64-Kbps codec.
G.723
A 6.3-Kbps audio codec or an 5.3-Kbps audio codec.
G.729
An 8-Kbps audio-codec.
gatekeeper
A term that is defined by the H.323 standard to describe the entity that performs most of the authorization, routing, and
feature functionality in an H.323 system.
Generalized Route Selection (GRS)
An enhancement to Automatic Alternate Routing (AAR) and Automatic Route Selection (ARS). GRS routes calls based
on call attributes, such as Bearer Capability Classes (BCCs), in addition to the address and facilities restriction level
(FRL). Thus, GRS facilitates a Uniform Dial Plan (UDP) that is independent of the type of call. See also
Automatic
Alternate Routing (AAR); Automatic Route Selection (ARS); Bearer Capability Class (BCC); facilities
restriction level (FRL).
glare
The simultaneous seizure of a two-way trunk by two communications systems that results in a standoff.
GM
Group Manager
GPTR
General-purpose tone receiver
GQPB
See
Guaranteed Quality of Service Packet Bus (GQPB).
grade of service (GOS)
The number of call attempts that fail to receive service immediately. GOS 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
See
Generalized Route Selection (GRS).
Guaranteed Quality of Service Packet Bus (GQPB)
A bus that provides for very small packets at extremely consistent intervals with minimum delay. A GQPB is optimized
for voice traffic, and is similar to a time-division multiplex (TDM) bus.