Lucent Technologies Metropolis DMXplore, Руководство по установке

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G L O S S A R Y
G L - 2 6
365-372-334 R2.0
Issue 4, November 2004
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Port State Provisioning
A feature that allows a user to supress alarm reporting and performance monitoring
during provisioning by supporting multiple states (automatic, in-service, and not
monitored) for low-speed ports. See Channel State Provisioning.
Proactive Maintenance
Refers to the process of detecting degrading conditions not severe enough to
initiate protection switching or alarming, but indicative of an impending signal fail
or signal degrade defect (for example, performance monitoring).
Protection Line
As defined by the SONET standard, the protection line is the pair of fibers (one
transmit and one receive) that carry the SONET APS channel (K1 and K2 bytes in
the SONET line overhead). On a Metropolis
®
DMXplore, a protection line is a pair
of fibers that terminate an OLIU circuit pack in the Main-2 or C-2 slots. See Service
Line.
Product Family 2000
Lucent’s first line of SONET standard network products providing total network
solutions.
R Reactive Maintenance
Refers to decting defects/failures and clearing them.
Remote
See Far-End (FE).
Revertive
A protection switching mode in which, after a protection switch occurs, the
equipment returns to the nominal configuration (that is, the service equipment is
active, and the protection equipment is standby) after the clearing of any failure
conditions that caused a protection switch to occur or after any external switch
commands are reset. See Non-Revertive.
Ring
A configuration of nodes comprised of network elements connected in a circular
fashion. Under normal conditions, each node is interconnected with its neighbor
and includes capacity for transmission in either direction between adjacent nodes.
Path switched rings use a head-end bridge and tail-end switch. Line switched rings
actively reroute traffic over a protection line.
RPP - Reliability Prediction Procedure
Described in Telcordia Technologies TR-NWT-00032.