Please read How do I configure TDM cards? (Analog/PRI/BRI) for information about how to access the cards page and configure your cards.
At this time, Fonality does not support auto-configuration of the Sangoma A500 BRI card. We are working to bring this functionality to our International customers as quickly as possible.
In the meantime, Sangoma has very detailed instructions for System Administrators working to configure BRI.
Please read BRI Installation for more information.