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Glossary and Abbreviations
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
NPA
NPE
Network processing element
NQC
Number of queued calls
NSE
NSU
Network sharing unit
null modem cable
Special wiring of an
NXX
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, usually one hour.