Hi, there are some messages indicating, that TxFax is able to return -1 on failure. Well, I tried a lot but didn't succeed. I even sent a fax to a phone set, picked up the hand set and waited until timeout of TxFax. There is no difference to success. The only thing I could determine, is, when the other party hangs up. Any other case called the next priority in the dialplan. Is there any reliable mean, to check, whether a fax is really sent successfully and complete? Thanks for any hints! Roger.