If an alarm is present,
the system will indicate that one of the following alarm levels
has been triggered:
- Minor (MN): This
alarm is triggered when a high temperature is detected on a card
causing the fan tray to switch to high speed.
- Major (MJ): This
alarm is triggered on the following conditions:
A hardware failure
was detected on a card that will cause it to be taken off-line
One of the Power Filter
Units has failed or was removed.
One or more of the
fans on either the upper or lower fan tray have failed.
Either the upper or
lower fan trays have been removed.
- Critical (CR): This
alarm is triggered when events cause a degradation in service (i.e.
the system is supporting a large number of subscribers and Processing
Cards are removed thus reducing the amount of available CPU and memory
resources).