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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Caution Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15310-MA SDH.
Step 3 If the alarm does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.203 SSM-LNC
The SSM-LNC condition is not used in this platform in this release. It is reserved for development.
2.7.204 SSM-OFF
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: BITS, E1, STM
The SSM Off condition applies to references used for timing the node. It occurs when the SSM for the
reference has been turned off. The condition is raised when the ONS system is set up to receive SSM,
but the timing source is not delivering SSM messages.
Clear the SSM-OFF Condition
Step 1 Complete the “Clear the SSM-FAIL Alarm” procedure on page 2-129.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.205 SSM-PRC
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: BITS, E1, NE-SREF, STM
The SSM Primary Reference Source (PRS) Traceable condition occurs when the SSM transmission level
is changed to Stratum 1 Traceable.
Note SSM-PRC is an informational condition. It does not require troubleshooting.
2.7.206 SSM-RES
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
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