Alcatel-Lucent 9500 MXC User Manual page 736

Probable Cause
Recommended Actions
Additional Information
Configuration Corrupt
Probable Cause
Recommended Actions
Additional Information
Vol. VI-B-10
Equipment malfunction.
Reboot the NCC by withdrawing it from its backplane, pausing, and re-inserting.
If the alarm remains, replace the NCC.
This alarm will only appear if an NPC is installed, and NCC clocking of the
TDM bus has failed. The event activating this alarm also initiates the switching
of the TDM bus clock from the NCC to the NPC.
During the switch of bus clocks, there will be traffic hit of not more than one
errored second. Switch time is typically less than 10 ms.
When the NCC has been replaced and alarm has cleared, clock management of
the TDM bus will remain with the NPC. It may be left with the NPC, or returned
to the NCC using the switch command in the CT System Controls screen. During
the switch there will be a traffic hit of not more than one errored second.
Should the NPC TDM bus clock fail control of the clock switches to the NCC.If
the NCC bus clock has also failed, control will be returned to the NPC. To avoid
switch oscillation between NPC and NCC clock sources, a switch oscillation
guard time is used.
User configuration data checksum failure. This is a critical alarm.
Configuration corrupted or process malfunction.
1. If the alarm is present at power-on, reboot (power off, pause, power on).
2. If the alarm is raised after a new software load, revert to the previous SW
version and check to see that the alarm has cleared. If cleared, retry the SW
load.
3. If the alarm is permanent, and the Flash Card Failure alarm is not active,
replace the NCC/IDU.
A checksum is used to determine configuration status during power-up and
software reloads. It may also be prompted during a reconfiguration.
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