Finally fixed in 2.31.25

For anyone not familiar, here is a screenshot of my free version.
0_1492617573275_upload-25f91f66-c1ba-4ae2-817f-456db86124b3

here is a paid version at a client with ~40 extensions.
(intentionally not all are shown such as the Snom PA-1 paging adapter, because I know someone will count....)
0_1492617629380_upload-221e49df-6efb-4acd-b371-c5146c52a84e

I also noticed if I used the *78 to activate DND/*79 to deactivate DND, I can't reverse DND from the soft button because the phone assumes it's already in the desired state. I can activate (on) DND, then turn around and deactivate it.

Just something to keep in mind, in case anyone was wondering.