Nortel Remote Office 9150 Installation And Administration Manual page 477

September 2001
G
G.711
G.711 is the international standard for encoding telephone audio on a 64 Kbps
channel. It is a pulse code modulation (PCM) scheme operating at an 8 kHz
sample rate, with 8 bits per sample. According to the Nyquist theorem, which
states that a signal must be sampled at twice its highest frequency component,
G.711 can encode frequencies between 0 and 4 kHz. Telcos can select between
two different variants of G.711: A-law and mµ-law. A-law is the standard for
international circuits.
G.726
G.726 is a standard ADPCM algorithm specified by the International
Telecommunication Union (ITU) for reducing the 64 kbps A-Law or mµ-law
logarithmic data of a normal telephone line to 16, 24, 32, or 40 kbps.
G.729
G.729 is a voice compression International Telecommunications Union (ITU)
standard that can be used in a wide range of applications including wireless
communications, digital satellite systems, packetized speech, and digital leased
lines. G.729 provides 8 Kbps of bandwidth for compressed speech at toll quality
(equivalent to G.726 32 Kbps ADPCM under clean channel condition).
gateway
A device that functions as a node on two or more networks, forwarding packets
from one network to addresses in the other networks. In Remote Office context,
the gateway is the device on the network that directs traffic to and from the
Remote Office 9150 unit or RLC.
Gbyte
1 073 741 824 bytes. One Gbyte is equal to 1024 Mbytes.
general protection fault
A computer condition that causes a Windows application to crash. GPFs usually
occur when one application attempts to use memory assigned to another
application.
GPCP
General purpose computing platform
Installation and Administration Guide
Glossary
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