when the primary ipbx is down, on older 5xxx phones you could see on the screen that the phone is attached to the secondary ipbx.
with the 69xx this is no longer possible.
do you know how i can know if i'm on my primary or secondary ipbx?
i need to know because i have emergency phones which can't be resilient on the secondary ipbx, and i need to know that the primary ipbx is turned off.