Lucent Technologies DDM-2000 OC-3, Руководство по установке

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GLOSSARY
Issue 9 October 1998 GL-13
Mult
The cascading of signals between shelves in a bay. In the MULT mode, the DS1
external reference can be cascaded to other shelves in a bay using Mult cables
,
n ormally starting with the bottom shelf (Number 1) and working towards the top of
the bay.
MUX
Multiplex. A device that multiplexes.
MXRVO
Circuit Pack . The MXRVO circuit pack multiplexes seven VT-G signals from the
DS1 circuit packs to an STS-1 signal for connection to the OLIU circuit packs.
N
NE
Near-End. The network element the user is at or working on. Also called local. Do
not confuse with NE as used to mean Network Element. The difference can be
discerned by the context of the material in which it appears.
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 trans-
mission 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 difference 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 designed by Bellcore
which is used to monitor network facilities.
NMON
Not Monitored — A provisioning state for equipment that is not monitored or
alarmed.