Hi Ulrik,
Thanks for the .pdf. Telia pushes state via a SOAP web service, so it would be possible to write a system that receives those state change notifications and publish them via Asterisk to be interpreted by FOP2 or other apps.
Anyways, as FOP2 monitors asterisk devices, I do not see exactly how do you envision the integration with the panel itself? To have custom buttons showing only state for cell phones ?
There is another thing that is problematic, if a status event is lost, state will be incorrect. You could get an event changing a state to busy, then your web service / internet becomes unavailable, and you will get a busy phone foerever or up until a new event is received.
There is also no way to get the current state of your mobile phones upon server startup/restart. Perhaps there is another spec from Telia describing how to poll for initial status.