Situation 1# I have an old plain fax that will use a regular pstn line plugged into elastix via SPA3102 to transmit faxes. My question is, What are the changes that i have to do to make it working well? Situation 2# I created 3 IAX2 extentions (numbers 3020, 3021 and 3022), then I went into FAX tab under https interface and Setted up this extentions as FAX. When I try calling this extentions, i can hear the FAX tone, but when I try sending faxes, I receive error message and the fax is not transmited. Do I have to change something to make it working? I'm sorry that my questions are often idiot but I'm with a big thirst to learn asterisk and make it working in my office.:blush: Since now thanks everybody.