FNPA
Issue 1.0 May 2003
407
external measurements
Those ACD measurements that are made by the External CMS adjunct.
external call
A connection between a communications system user and a party on the public
network or on another communications system in a private network.
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.
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.
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.
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.
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.
FNPA
Foreign Numbering-Plan Area
