This Architectural Drawing is AutoCAd 2d drawing of 2d fax phone cad blocks in AutoCAD, dwg file. If you need to find your own fax number, try calling a personal cell phone from your fax machine and look at the caller ID for the number. If you already have the fax number but need to determine who sent you the fax, do a "reverse lookup" search online by typing the fax number into a search engine or directory.