How did you get you magic jack to work with your fax. Mine drops at 1/2 first page. And won't send a full page either. Now,,, this is to a friends home fax, but ??????
Make sure if you have a fire wall. That it full allows it to go through. Also there is a way to do a text fax through your fax machine im sure and see if it tests ok..Also try switching USB ports. Also make sure there isn't anything else plugged in any other the USB ports. That will mess with it as well....