255-700-166
Glossary-37
PacketStar
®
PSAX 6-Port DS1 IMA Module User Guide
, Issue 1
Release 7.0
Glossary
NEBS
Network Equipment Building Standard. A standard that
defines a rigid, extensive set of performance, quality, environ-
mental, and safety standards. They range from fire spreading
and extinguishability tests to earthquake tests, thermal shock
measures, cyclic temperature, mechanical shock, and electro-
static discharge standards.
neighbor peer
The relationship a node in the PSAX system has with a neigh-
boring node within the same peer group.
network
A network consists of one or more management stations and
network elements, which are individual nodes on the net-
work that can communicate with one another. These nodes
are individual machines on the network and can be PSAX
systems, routers, computers, or other communications equip-
ment.
network elements
See NE.
network equipment building stan-
dard
See NEBS.
network interface card
See NIC.
network management system
See NMS.
network mask
A 32-bit number that distinguishes the portion of an IP
address referring to the network or subnet from the portion
referring to the host.
network service access point
See NSAP.
network-network interface
See NNI.
network-to-network (NNI) Imple-
mentation Agreement
See FRF2.1
nibble
Four bits. Usually described as one hexadecimal digit.
NIC
Network Interface Card. The device that connects a computer
or other device to a LAN.
NMS
Network Management System. A comprehensive set of
equipment used in monitoring, controlling, and managing a
data communications network. Typically, it includes testing
devices, CRT displays and printers, patch panels, and circuitry
for diagnosing and reconfiguring channels, generally all
housed in the same central console.
NNI
network to network interface. A Frame Relay Forum/ATM
Forum protocol governing how ATM switches establish con-
nections and how ATM signals get routed.
node
An abstract representation of a peer group or a switching sys-
tem as a single point.
node index
An index that identifies a logical PNNI entity in the PSAX sys-
tem.
non-native ATM networking proto-
cols
Communications protocols such as ISDN, SS7, and CAS.
