Справочник Пользователя для Lucent Technologies Release 6
DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Glossary and Abbreviations
Page GL-23
F
FAC
Feature Access Code
facility
A telecommunications transmission pathway and associated equipment.
facility-associated signaling (FAS)
Signaling for which a D-channel carries signaling only for those channels on the same physical
interface.
interface.
FAS
Facility-associated signaling
FAT
Facility access trunk
FAX
Facsimile
FCC
Federal Communications Commission
FEAC
Forced Entry of Account Codes
feature
A specifically defined function or service provided by the system.
feature button
A labeled button on a telephone or attendant console used to access a specific feature.
FEP
Front-end processor
FIC
Facility interface codes
fiber optics
A technology using materials that transmit ultrawideband electromagnetic light-frequency ranges
for high-capacity carrier systems.
for high-capacity carrier systems.
fixed
A trunk allocation term. In the fixed allocation scheme, the time slots necessary to support a
wideband call are contiguous, and the first time slot is constrained to certain starting points.
wideband call are contiguous, and the first time slot is constrained to certain starting points.
flexible
A trunk allocation term. In the flexible allocation scheme, the time slots of a wideband call can
occupy noncontiguous positions within a single T1 or E1 facility.
occupy noncontiguous positions within a single T1 or E1 facility.
floating
A trunk allocation term. In the floating allocation scheme, the time slots of a wideband call are
contiguous, but the position of the first time slot is not fixed.
contiguous, but the position of the first time slot is not fixed.
FNPA
Foreign Numbering-Plan Area