Hey People, I've recently purchased some T46G's which have been working fine apart from I can't seem to get the BLF keys to work, none of the extensions I have set seem to work (no LED and a cross on the expansion module), is there anything can do to test? I've put some details below of what I've already tried. 3CX Version: 15.0.60903.0 Phone HW: 188.8.131.52.0.0.0 Phone FW: 184.108.40.206 I've Tried: Testing on multiple phones (same model). Factory resetting the phone and re-provisioning. Manually setting up the phone as per the 3CX guide. Creating another 3CX server and setting it up on that. Using the soft-phone (which works). Setting the Extension to *20* as well as *20*EXTENSION . Thanks!