We have a customer which would like:
* Call hunting to ring multiple extensions upon an incoming call
* A DND service being enabled on their primary extension to cause immediate forwarding to VMS (regardless of the state of any other extensions used in call hunting)

Currently they are able to enable DND on the primary extension and forward to VMS - this alone works fine. It does not work as desired when Call Hunting is enabled for that extension though, and instead seems to ring until reaching the no answer timeout before forwarding to VMS (which is not desirable).

Given that the customer would like to enable and disable DND throughout the day (schedules are not an option) to cause forwarding to VMS, how can this be achieved?