T48G BLF + 3CX DND

Hey there,
we use T48G Phones with our 3CX V14SP2 PBX.
I wanted to ask if it is possible to show BLF red if DND is activated on Phone.

I already asked 3CX Support - they told me this is not possible - but I'm pretty sure it was working in V12.5 - and stopped working with V14 ...

Thx
Andreas Schnederle-Wagner