From the Administration menu, select Preferences > General.
On the General tab, use the Failback Option field to set the failback option that you want to configure.
Manual: The system administrator has to initiate the failback operation.
Graceful (Default): The backup server initiates the failback operation once all current calls on the backup voicemail server end.
Automatic: The backup server initiates the failback operation once all current calls on the backup voicemail server end or, if exceeded, after the specified timeout period set (maximum 60 minutes).
