I am just setting up a new 4x4 and have upgraded fw to 4.1.18fx. When I configure the display name of an extension, it is not displayed on the snom 360 phone (fw 6.5.1) . It just shows Ext.15 etc. It is not a phone issue as I watched the download of the config file using a sniffer, and that is what is being sent from the quadro.