Alcatel-Lucent 1830 PSS-16 Maintenance And Trouble-Clearing User Manual page 423

Trouble-clearing procedures
LOS-P
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If power level is low on the DWDM facing port, identify the associated OCh trail and
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verify the power levels along the OCh trail.
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Identify the farthest upstream point relative to the far end OTUk port at which power
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level falls within the expected range.
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4 Check the alarms/conditions on the node located in
upstream from point identified in
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Correct the problem identified in
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6 If all power levels along the OCh trails fall within the target range, locate the fiber
connected directly to receiver of the port which detects SSF condition.
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Clean the fiber.
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8 If cleaning the fiber does not clear the problem, replace the fiber.
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If the problem is detected on the client port of 11STAR1 OT, and the power level is
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within the operating range, check for pluggable module alarms.
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10 Replace the pluggable module.
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N D O F
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LPBKLINE
LPBKLINE (Line [Facility] Loopback Active)
A line loopback is active on the specified port. Loopbacks are user-initiated and may only
be cleared by manually removing them from the port.
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
S T E P S
Step 3
Step 4.
Step 4.
LOS-P (Incoming Payload LOS)
or the node immediately
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