I've just upgraded to version 15.5 SP2. (15.5.6354.2) I'm using Fanvil X4 phones running firmware 22.214.171.12461. Previously I would edit the fanvil.ph.xml file located at ProgramData\3CX\Instance1\Data\Http\Templates\phones I could edit this file with various changes which, during phone provisioning, would configure phones in various ways. example - <Display_Name> %%extension_number%% | %%extension_first_name%%</Display_Name> Since upgrading 3CX, this has stopped working. I can see the fanvil.ph.xml file still has my changes, but the phones seem to completely ignore this. Example - the <Display_Name> setting above has changed to <Display_Name>%%extension_first_name%% %%extension_last_name%%</Display_Name> Has something changed to the way this works?