David Fordyce wrote, and he isn't alone: >> BTW... Does anyone know the whereabouts of an online reference listing >> and describing all the +Fxxx commands? I've found bits and pieces at Hayes >> and a few other places, but no "complete" list. Thanks. Try http://www.modems.com an amazing, selflessly compiled (well, probably somebody wants to earn money somewhere), useful web site with gobs of information about modems. Good luck,