Avaya Control Manager provides the Toggle button feature to avoid manual intervention of the administrator to make configuration changes post switchover to Avaya Oceana® DR applications. The toggle button configures Avaya Control Manager to use the Avaya Oceana® UCA server instance in the DR location after the switchover is complete. On a switchback, the toggle button reverts the Avaya Control Manager application to use the Avaya Oceana® UCA server instance at the primary site. However, on a switchback, the administrator must manually re-configure Avaya Control Manager to use the primary Avaya Oceana® and Avaya Analytics™ applications as the toggle back feature does not preserve these settings.