Thanks Acejavelin for your answer.
Yes, I presume it is working. Because I have in my network a TMS iCharge server that's rating calls so that they can be charged by the PMS, and this is working quite well.
If a guest is checked in by the PMS, it is updating the Users and Devices form some times. Some times it is not updating and we still read Vacant Room in the form despite that the PMS has already checked in the room.
But as you said maybe it is sending along a bad message format. Going to ask the PMS guy to check on his side.
Nice evening to you.