AT&T OneVision DEFINITY G3 Guide Manuel d'instructions Page 262

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DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Glossary and Abbreviations
GL-24
network interface
A common boundary between two systems in an interconnected group of systems.
NFAS
See Nonfacility-associated signaling (NFAS)
.
NID
Network Inward Dialing
NM
Network management
node
A switching or control point for a network. Nodes are either tandem (they receive signals and pass
them on) or terminal (they originate or terminate a transmission path).
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.
NPA
Numbering-plan area
NPE
Network processing element
NQC
Number of queued calls
O
OA
Operator assisted
occurrence
See appearance.
OCM
Outbound Call Management
ONS
On-premises station
OPS
Off-premises station
OPX
Off-premises extension
OQT
Oldest queued time
OSHA
Occupational Safety and Health Act
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