I try to send fax, the oki multifunction dial the number and only it's possible to hear a little sound "beep" and inmediatly the transmision cuts and the menu display return at main. It's possible to check the fax options and the task is available yet. The machine try again but the same operation. Maybe a wrong configuration it's there but I can't to find it. Are there any kind of original reset to keep the machine as new and test if that way I can solve my problem?