AT&T MERLIN LEGEND Release 3.1, Руководство по системному программированию

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Glossary
GL–12
System Programming
Facility Restriction
Level See FRL .
factory setting Default state of a device or feature when an optional
setting is not programmed by the user or system manager.
fax (facsimile) Scanning and transmission of a graphic image
over a telecommunications facility, or the resulting
reproduced image, or the machine that does the scanning
and transmitting.
FAX Attendant
System Fax handling and processing application available with
AUDIX Voice Power .
FCC Federal Communications Commission
feature Function or service provided by the system.
feature code Code entered on a dialpad to activate a feature.
feature module Prior to Release 3.0, a circuit pack inserted into the
processor module, used to provide system features and
replaced when the system is upgraded.
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, a type of memory provided on
the
processor module.
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 procedure; system prevents initiation of new
calls.
foreign exchange See FX .
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 ring generator .
FRL (Facility Restriction Level) ARS calling restriction type that
restricts outgoing calls to certain specified routes.