Thanks, I will grab it tomorrow when I get back to the office. I checked the OZ TAC but even though there were references to it, I couldn't find the file. I'm currently in the middle of doing a Teams integration but if that turns out to be no good, we may dump both teams and the 9100 and reflash the handsets to use them on 3CX! I'm puzzled by the legacy PABX manufacturers response to the changing market place. NEC are charging for licensing for the 9100, licensing for the SBC and then we have to pay for Teams licenses. 3CX does it all on a free license (not Teams but remote extensions) Alcatel can't even handle sip channels properly, put a call on hold on line 1, look away and it is on hold on line 2!
Very frustrating times, retirement is beckoning (unfortunately still have 3 years to go)!