DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
Glossary and abbreviations
1646
NANP
North American Numbering Plan
narrowband
A circuit-switched call at a data rate up to and including 64 kbps. All nonwideband switch calls are consid-
ered narrowband.
native terminal support
A predefined terminal type exists in switch software, eliminating the need to alias the terminal (that is, manu-
ally map call appearances and feature buttons onto some other natively supported terminal type).
NAU
Network access unit
NCA/TSC
Noncall-associated/temporary-signaling connection
NCOSS
Network Control Operations Support Center
NCSO
National Customer Support Organization
NEC
National Engineering Center
NEMA
National Electrical Manufacturer’s Association
NETCON
Network-control circuit pack
network
A series of points, nodes, or stations connected by communications channels.
network-specific facility (NSF)
An information element in an ISDN-PRI message that specifies which public-network service is used. NSF
applies only when Call-by-Call Service Selection is used to access a public-network service.
network interface
A common boundary between two systems in an interco nnected group of systems.
NFAS
See Nonfacility-associated signaling (NFAS).
NI Network interface
NIDNetwork Inward Dialing
NMNetwork management
NNNational number
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).