I am working on presence in polycom phones. I have BLF key for fifo-orbits. Presence is working fine when call is parked in orbit. But if phone has lower subscription-expiry and phone resubscribes, then freeswitch responds with "Terminated" state notify. 

Same is happening for user-directory extension number set as BLF in polycom phones. 

Also if i add BLF for either fifo-orbit or extension when any call is parked or extension is attending call respectively, presence is not working as per expectation.

I verified this in latest freeswitch version 1.8.2 and also Master pull. 

I would like to know why it is behaving this way. Below link also faced similar issue, but it is still not resolved : 

Your help is much appreciated. Let me know what information is required from my end.

Thanks and regards,

Mittali Jangid