The Valcom device is added to the IP Office system as a SIP Extension. Each SIP Extension requires one Avaya IP End-point license in the IP Office server. These instructions cover the minimum configuration necessary for a Valcom SIP-enabled device.he following steps outline the typical configuration process: 1. Open the Avaya IP Office Manager application and connect to the IP Office server where the new SIP extension will be created. In the Navigation pane, click on the Extension category. 2. The defined extensions will be displayed in the Group pane.