Administrator's Guide

N
Issue 5 October 2002 1985555-233-506
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 interconnected group of systems.
NFAS
See Nonfacility-associated signaling (NFAS).
NI
Network interface
NID
Network Inward Dialing
NM
Network management
NMS
Network Management System
NN
National 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).
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