Cisco ONS 15454 Troubleshooting Manual page 360

2.7.227 LOS (OTS)
Step 5 If the optical power level is within specifications, use an optical test set to verify that a valid signal exists
on the line. For specific procedures to use the test set equipment, consult the manufacturer. Test the line
as close to the receiving card as possible.
If a valid signal exists, replace the connector on the backplane.
Step 6
Repeat Steps
Step 7
If the alarm does not clear, look for and troubleshoot any other alarm that could identify the source of
Step 8
the problem.
If no other alarms exist that could be the source of the LOS, or if clearing an alarm did not clear the LOS,
Step 9
complete the
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
Step 10
for more information or call Cisco TAC 1 800 553-2447 in order to report a Service-Affecting (SA)
problem.
2.7.227 LOS (OTS)
For information about this alarm or condition, refer to the "Alarm Troubleshooting" chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.228 LOS (TRUNK)
For information about this alarm or condition, refer to the "Alarm Troubleshooting" chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.229 LOS-O
For information about this alarm or condition, refer to the "Alarm Troubleshooting" chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.230 LOS-P (OCH)
For information about this alarm or condition, refer to the "Alarm Troubleshooting" chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.231 LOS-P (OMS, OTS)
For information about this alarm or condition, refer to the "Alarm Troubleshooting" chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.232 LOS-P (TRUNK)
For information about this alarm or condition, refer to the "Alarm Troubleshooting" chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
Cisco ONS 15454 Troubleshooting Guide, R8.5
2-166
1 to 6 for any other port on the card reporting the LOS (OC-N).
"Physically Replace a Traffic Card" procedure on page 2-273
Chapter 2 Alarm Troubleshooting
for the reporting card.
November 2009