Lucent Technologies 8.2 User Manual
DEFINITY ECS Release 8.2
Administrator’s Guide
Administrator’s Guide
555-233-506
Issue 1
April 2000
Glossary and abbreviations
1647
Nonfacility-associated signaling (NFAS)
A method that allows multiple T1 and/or E1 facilities to share a single D-channel to form an ISDN-PRI. If
D-channel backup is not used, one facility is configured with a D-channel, and the other facilities that share
the D-channel are configured without D-channels. If D-channel backup is used, two facilities are configured
to have D-channels (one D-channel on each facility), and the other facilities that share the D-channels are
configured without D-channels.
D-channel backup is not used, one facility is configured with a D-channel, and the other facilities that share
the D-channel are configured without D-channels. If D-channel backup is used, two facilities are configured
to have D-channels (one D-channel on each facility), and the other facilities that share the D-channels are
configured without D-channels.
NPA
Numbering-plan area
NPE
Network processing element
NQC
Number of queued calls
NSE
Night-service extension
NSU
Network sharing unit
null modem cable
Special wiring of an RS-232-C cable such that a computer can talk to another computer (or to a printer) with-
out a modem.
out a modem.
NXX
Public-network office code
O
OA
Operator assisted
occurrence
See
appearance
.
OCM
Outbound Call Management
offered load
The traffic that would be generated by all the requests for service occurring within a monitored interval, usu-
ally one hour.
ally one hour.
ONS
On-premises station
OPS
Off-premises station
OPX
Off-premises extension
OQT
Oldest queued time