Alcatel-Lucent 1830 PSS-4 - Page 343

FECECSD
FECECSD (Pre-FEC Signal Degrade)
The OT port has detected a Signal Degrade Path layer. This defect indicates that local
OTUk port has detected FEC BER which exceeds 10-5.
This may be caused by the following reasons:
• Damaged or dirty fiber connected to the local receiver
• Damaged or dirty receiver inside pluggable module
• The received power may not be within the acceptable range on local port input •
• Power level out of range on the associated OCh trail
Severity Minor
Service affecting? No
Applicability 11STAR1, 11QPA4
This procedure details the corrective action for an FECECSD against the OT port.
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1
Perform the procedure, “DEGOTU” (p. 2-68). Because it is FEC corrected BER, it does
not affect service unless another alarm exists on the port.
FECUBCSD
FECUBCSD (Post-FEC Signal Degrade)
The OT port has detected uncorrectable bit errors after FEC. This defect indicates that
local OTUk port has detected FEC BER which exceeds 10
-6
.
Trouble-clearing procedures FECECSD (Pre-FEC Signal Degrade)
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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
2-93
E ND OF STEPS
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