In Trixbox (2.8/Asterisk 1.6) when I setup FOP2 and put the extensions_freepbx_override.conf in place the DND feature on the grand-stream phones breaks-- eg: the operator can't see the status of the users on her side panels on the phone (we're testing now, so we're not directing them to the FOP panel.) If I remove the override it of course starts working again. Any ideas how to get both working together?