Lucent Technologies 555-661-150 manual Frl, Gpa

MERLIN LEGEND Communications System Release 6.1		Issue 1
Network Reference 555-661-150	August 1998
Glossary
	Page GL-13
Flash ROM	Beginning with Release 3.0, a 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 FX.
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	See ring generator.
generator
FRL	(Facility Restriction Level) Calling restriction type that
	restricts calls to certain specified ARS and UDP routes.
FX	(Foreign exchange) Central office (CO) other than the one
	that is providing local access to the public telephone
	network.

G

General Purpose	See GPA.
Adapter
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 (CO).
Group IV (G4) fax	A fax unit, offering 400 by 100 dots per inch (DPI) in fine
machine	mode, that can operate at any speed for communication
	with a Group III (G3) fax machine or another Group IV (G4)
	fax machine.