Broadsoft Interoperability Features108 RN-001029-00, Rev 03, Release 2.1IP Phone Release Notes 2.1Configuring a Server Blacklist Using the Aastra Web UIYou use the following procedure to configure a server blacklist using the AastraWeb UI.Aastra Web UI1 Click on Advanced Settings->Global SIP->Advanced SIP Settings2 In the “Blacklist Duration” field, specify the length of time, in seconds, that a failed server remainson the server blacklist.The IP phone avoids sending a SIP message to a failed server (if another server is available) for thisamount of time.For example: 6003 Click to save your changes.