One of our DKT3020's is having some weirdness with the feature buttons.

I programmed it exactly the same as our other DKT3020s, but only the bottom left 7 feature buttons perform as expected. The rest don't accept any assignments.

For example, the top left button (position 10) is set to DND. Pushing this button does nothing -- the handset emits beep, but it does not change to DND.

If I assign DND to one of the first 7 buttons, not only does it work, but the other DND button lights up.

What am I doing wrong? Program 204-03 is set to 20 for the keystrip button quantity. I've done this before and never had a problem. I feel like I'm missing something pretty obvious.

Thanks.

What is the version of the system?

Equipment Type: CIX670 : B--U
Equipment Version: AR2.21 MH116.00

Sorry about that. I thought I had it in my signature.

If it was me, I'd double check the button settings from the phone.

Log into User Programming mode by entering #9876
Press the HOLD key to go to Key Assign Mode
Press that top button. Does it say DND or 000 Not programmed?
I believe the code 180 is for DND. Enter 180 and press the same key.

delete the extension and re-create it again with the same equipment number.
The default settings will be OK to re-test as it will be set to a 20 key handset by default

Well that was easy.

Thanks for your help.