There is a recommended order to powering up the IP Office 500 V2: first up the expansion modules before powering up the control unit.
Why is this?

Question

There is a recommended order to powering up the IP Office 500 V2: first up the expansion modules before powering up the control unit.Why is this?

tirou RANGA · Accepted Answer

All expansion units need to be powered for the control unit to discover them.

tirou RANGA · Answer

It is easier to start with the expansion unit at the top and then work your way down.

tirou RANGA · Answer

The expansion units may not always see the control unit if powered up last.

tirou RANGA · Answer

The expansion units take longer to power up.

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