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Cisco ONS 15501 User Guide
78-14134-02, Release 2.0
APPENDIX
A
Cisco ONS 15501 Alarms
Following alarms are defined for Cisco ONS 15501:
• Ambient Temperature
[Temperature out of range]
Explanation The temperature measured by the thermal sensor shows a value outside the operational
limits.
Recommended Action Change environment so that the chassis cools down.
• Electrical Power
[Power Supply voltage level out of range]
Explanation The measured power supply levels are not within range.
Recommended Action Ensure proper voltage levels for both the electrical inputs.
• Input Signal Power
[Input Signal level out of range]
Explanation The measured input signal power is not within range.
Recommended Action The device might be operating outside the configured input optical limits.
Change the mean and trigger values appropriately, or check the equipment and link providing optical
input to the unit.
• Output Signal Power
[Output Signal level out of range]
Explanation The measured output signal power is not within range.
Recommended Action The device may be operating outside of specified limits or the mean and trigger
are not properly defined. Change the mean and trigger values appropriately, vary the optical input,
or change configured gain, so that the output signal power is in the operational range.