Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual page 390

OGC (Optic Gate Controller)
The controller of an Optic Gate module. Its tasks are to control the components of the module
and connect it to a circuit pack.
OLS (Optical Line System)
A lightwave transmission system that can multiplex up 8, 16, 80 or more wavelengths, transmit
the resulting multiplexed signal, and then demultiplex the signal at the other end.
OM (Optical Multiplexer)
The process by which two or more wavelengths are combined onto a single fiber.
OMON (Optical MONitor)
The OMON circuit pack scans the entire DWDM spectrum to provide Optical Spectrum
Analysis (OSA) for up to 4 or 8 selected locations in an NE.
OMS (Optical Multiplex Section)
A layer in the Xtreme transmission hierarchy.
OOF (Out of Frame)
State in which the frame alignment sequence of an SDH/SONET frame has not been found for
several consecutive frames.
OOS (Out-of-Service)
The circuit pack is not providing its normal service function (removed from either the working
or protection state) either because of a system problem or because the pack has been removed
from service.
Operational Recovery
A recovery with the intent to perform an operation, such as to activate new software version.
Optical Channel
An optical wavelength band for WDM optical communications.
Optical Channel Spacing
The wavelength separation between adjacent WDM channels.
Optical Channel Width
The optical wavelength range of a channel.
Optical Isolator
A component used to block out reflected and unwanted light. Used in laser modules, for
example. Also called an isolator.
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G L O S S A R Y
G L - 2 0
Lucent Technologies - Proprietary
See notice on first page
365-575-783R1.1
Issue 1, June 2002