We are currently using INFORM PC with the smdr / Mitel SX-200. The Mitel is set with no answer supervision on the trunks. Mitel support has told the techs that this is the way it should be, as some CO's do not send back answer supervision. I have not heard of this. They instead have a 30 second grace period before the smdr starts tracking. This means a guest could call leave a message and never get billed for the long distance call in the hotel. I am sure that there is a better way to do this. Any suggestions would be helpful. I say keep answer supervision set. Thank you in advance.