[Freeswitch-users] Try to discover DND state

Hi all, I'm asking myself if it's possible to get a phone state. In our case I want to know which phone (Polycom SoundPoint IP 560) is on 'do-not-disturb'. Is there a possibility to find out from FreeSWITCH site (events, notify, etc.) or should I program the soft keys on the phone. Any hint in the right direction would be really helpful. Thanks a lot! Stefan