Refer to the exhibit.

Before you can begin configuring SIP Trunking, the status that all the Avaya Session Border Controller for Enterprise (ASBCE) components / devices should show on the Device Management screen is Ready. The Device Management screen is a web interface that allows you to view and manage the ASBCE components / devices, such as EMS (Element Management System), SBC (Session Border Controller), or HCA (High Capacity Appliance). The Device Management screen displays information such as device name, management IP, version, status, reboot, and shutdown for each component / device. The status indicates the operational state of the component / device, which can be one of these values: Provisioned, Commissioned, Registered, or Ready. The Ready status means that the component / device is fully operational and ready to handle traffic. Therefore, before configuring SIP Trunking, you should make sure that all the ASBCE components / devices have a Ready status on the Device Management screen.