Lucent Technologies Metropolis Installation Manual page 521

Terms and Definitions
.............................................................................................................................................................................................................................................................
...........................................................................................................................................................................................................................................................
365-372-304
Issue 7, March 2003
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 DMX 2.5G Multiplexer, a protection line
is a pair of fibers that terminate an OLIU circuit pack in the Main-2, A-2, B-2,
C-2, D-2, or G-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.
Lucent Technologies - Proprietary
See notice on first page
Glossary
G L - 2 7