Hi, I am working with pjproject-2.8 and have almost everything working just that way I need. The only problem I have now is with the 'call_on_dtmf_callback2' function: All keys on the phone transmit and are recognised properly except for the '*' key. I have to press this key twice before it is recognised and returned in the callback. I was wondering if anyone has come across this problem before, and if so, what the fix is. I am using this callback to operate some hardware I/O's based on the code entered on the remote phone keypad. Kind regards Gerry Cohn