363-206-208
Glossary
Issue 5 June 2000
GL-13
NE
Network Element — The basic building block of a telecommunications equipment within
a telecommunication network that meets SONET standards. Typical internal attributes
of a network element include: one or more high- and low-speed transmission ports,
built-in intelligence, synchronization and timing capability, access interfaces for use by
technicians and/or operation systems. In addition, a network element may also include
a time slot interchanger. Do not confuse with NE as used to mean Near-End. The differ-
ence can be discerned by the context of the material in which it appears.
NE ACTY
Near-End Activity — An LED on the user panel.
NEBS
Network Equipment-Building System.
nm
Nanometer (10
-9
meters)
NMA
Network Monitoring and Analysis — An operations system which is used to monitor net-
work facilities.
NMON
Not Monitored — A provisioning state for equipment that is not monitored or alarmed.
Node
In SONET a node is a line terminating element.
Non-Revertive
A protection switching mode in which, after a protection switch occurs, the equipment
remains in its current configuration after any failure conditions that caused a protection
switch to occur clear or after any external switch commands are reset. (See Revertive.)
NRZ
Nonreturn to Zero.
NSA
Non Service Affecting. An occurrence or activity in a system where there is no interrup-
tion of transmission of the payload traffic.
NSAP
Network Services Access Point — An address that identifies a network element. Used
for subnetwork communication using the OSI protocol.
O
OAM&P
Operations, Administration, Maintenance, and Provisioning
Summary of Contents for DDM-2000 OC-12
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