Chapter 4 Turning on the Avaya P460
Power Management
The Supervisor module checks the PSU status every three seconds by comparing the current state to the previously saved PSU state.
Figure 4.2 Power Management Priority
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The Power Management Process
The power management process is activated in the SPV only if there is a change in power requirements or supply caused by one of the following events:
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•PSU removal if there are two PSUs
•PSU insertion if there is only one PSU
•I/O module insertion
•I/O module removal
•Administratively enabling/disabling a slot
Removing both supervisors turns off the entire system.
In case of power failure in a module, the Supervisor module receives an indication from the failed module. The Supervisor module will turn off the I/O module and issues a warning.
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