SDBER (Signal Degrade)
The OT port has detected a Signal Degrade Bit Error Rate (SDBER) on the OC-
n
/STM-
n
port of the applicable card. This defect indicates that local OC-
n
M/STM-
n
port has
detected a BER that exceeds selected threshold (default 10
-6
).
This may be caused by the following reasons:
• Damaged or dirty fiber connected to the far-end receiver
• Received power may not be within the acceptable range on far-end port input
• Damaged or dirty transmitter inside pluggable module on the far end
Severity Major
Service affecting? No
Applicability 112SCX10, 112SX10L, 11QPA4, 11STAR1, 11STMM10,
43SCX4
Corrective Action
This procedure details the corrective action for clearing the SDBER against the OT port.
...................................................................................................................................................................................................
1
Retrieve power level reading on the local port.
...................................................................................................................................................................................................
2
Clean the fiber.
...................................................................................................................................................................................................
3
If cleaning the fiber does not clear the problem, replace the fiber.
...................................................................................................................................................................................................
4
If the power level is within the operating range, check for pluggable module alarms.
...................................................................................................................................................................................................
5
Replace the pluggable module.
Trouble-clearing procedures
SDBER
SDBER (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
2-287
E ND OF STEPS
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