MERLIN LEGEND Communications System Release 7.0
System Programming
555-670-111
Issue 1
April 1999
Glossary
GL-14
G
Feature Screen
Display screen on MLX display telephones; provides quick
access to commonly used features.
Ferrite Core
Attachment to the AC power cord and ground wire of the
carrier power supply for compliance with FCC, part 15
requirements.
Flash ROM
Beginning with Release 3.0, type of read-only memory
provided on the
processor module
, used to supply system
features.
Foil Shield
Copper foil sheet (for power units), used to prevent
excessive noise on the module.
Forced Idle
Condition of the system during certain programming or
maintenance procedures; system prevents initiation of new
calls.
Foreign Exchange
See
.
Fractional-T1
A digital transmission facility consisting of at least one, and
fewer than 24,
DS0
channels using robbed-bit signaling,
and connecting a
PBX
and a
central office
or toll office.
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 bytes, which equals 193
bits.
Framing Format
Pattern of
frames
used in transmissions.
Frequency
Generator
See
.
FRL
Facility Restriction Level
. Calling restriction type that
restricts calls to certain specified
ARS
and
UDP
routes.
FX
Foreign Exchange
.
Central office
other than the one that is
providing local access to the public telephone network.
General Purpose
Adapter
See
.
Glare
Condition that occurs when a user tries to call out on a
loop-start line
at the same time that another call arrives on
the same line.
GPA
General Purpose Adapter
. Device that connects an analog
multiline telephone to optional equipment, such as an
answering machine or a fax machine.
Ground-Start
Trunk
Trunk on which the communications system, after verifying
that the trunk is idle (no ground on tip lead), transmits a
request for service (puts ground on ring lead) to the
telephone company
central office
.
