Verify that there is no activity on the server you are upgrading.
In System Manager, click ElementsAvaya Breeze®Server Administration.
In the row for the server you are upgrading, look in the Activity column.
Verify that the Activity is 0.
ADDITIONAL INFORMATION:
It can take a couple of hours for activity to reach zero. If activity has not stopped in a reasonable time, you can choose to proceed with the upgrade. Active calls continue but without snap-in call control.