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MWL
418 Communication Manager Guide to ACD Call Centers
MWL Message-waiting lamp
N+1 Method of determining redundant backup requirements. Example: if four rectifier
modules are required for a DC-powered single-carrier cabinet, a fifth rectifier module
is installed for backup.
N x DS0 N x DS0, equivalently referred to as N x 64 kbps, is an emerging standard for
wideband calls separate from H0, H11, and H12 ISDN channels. The emerging N x
DS0 ISDN multirate circuit mode bearer service will provide circuit-switched calls
with data-rate multiples of 64 kbps up to 1536 kbps on a T1 facility or up to 1920
kbps on an E1 facility. In the switch, N x DS0 channels will range up to 1984 kbps
using NFAS E1 interfaces.
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 considered narrowband.
native terminal support A predefined terminal type exists in switch software, eliminating the need to alias the
terminal (that is, manually 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 interconnected group of systems.
NFAS See Nonfacility-associated signaling (NFAS) on page 419.
NI Network interface