AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 271

Glossary
ESF
expansion
carrier
extended
superframe
format
facility
factory setting
fax
feature
feature code
frame
frequency
generator
FX
gateway
general purpose
adapter
glare
GPA
(Extended superframe format) A framing format consisting
of individual frames of 24 eight-bit slots and 1 signal bit
(193 bits) in a 24-frame extended superframe. See also D4
framing format.
A carrier added to the control unit when the basic carrier
cannot house all the modules needed. An expansion carrier
houses a power supply module and up to six additional
line/trunk and station modules.
See ESF.
The equipment constituting a telecommunications path
between the communications system and the central office.
The default state of a device or feature if the user does not
choose an optional setting.
(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.
A function or service provided by a hardware or software
product.
A code entered on a dialpad to activate a feature. For
example, a user might press the Feature button and dial 33
or might dial
#33.
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.
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.
(Foreign exchange) A central office (CO) other than the one
providing local access to the public network.
A workstation on a local area network (LAN).
See GPA.
The loud dual-tone multifrequency (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.
(General Purpose Adapter) A device that connects an
analog multiline telephone to optional equipment, such as
an answering machine or a fax machine.
Glossary GL-9