AT&T MERLIN LEGEND Data Manual page 141

Glossary
F
facility
The equipment constituting a telecommunications path between the communications system and the central office (CO).
factory setting
The default state of a device or feature if the user does not choose an optional setting.
fax (facsimile)
A processor the result of a process in which graphic material is scanned and the information converted into electrical signal
waves to produce an exact likeness.
feature
A function or service provided by a hardware or software product.
feature code
A code entered on a dialpad to activate a feature. For example, a user might press the feature button or might dial #33.
Feature screen
A display screen on digitaI/lSDN display telephones that provides quick access to commonly used features.
foil shield
A copper foil sheet for power units on expansion carriers that is used to prevent excessive noise on the module immediately
to the right of the power supply module in each expansion carrier.
frame
One of several segments of an analog or digital signal that has a repetitive characteristic. For example, a DS1 frame consists
of a framing bit and 24 octets, which equals 193 bits.
frequency generator
A circuit pack added to the power unit module that generates a high-voltage, 20-30-Hz signal to ring a telephone. Also
called a ring generator.
FX (foreign exchange)
A central office (CO) other than the one providing local access to the public network.
G
General Purpose Adapter (GPA)
A device that connects an analog multiline telephone to optional equipment such as an answering machine or a fax machine.
glare
The loud dual-tone multi-frequency (DTMF) signal an incoming caller hears when another caller tries to call out on a line/trunk
at the same time the call is coming in on that line/trunk.
ground-start (GS) line/trunk
A line/trunk on which, after verifying that the line/trunk is idle (no ground on tip), the communications system transmits a
request for service (puts ground on ring) to a distant central office (CO).
GL-7