I'm using both Diamond Supra express 33.6 and 56 modems. The wake up string that I'm using is AT&F1 the initialization string is ATS0=0. I have had problems in the past using the modem settings that are in both the TFUSER for Mac and Windows. This seems to work when I select the Supra V32 from the list and change the initialization string. Set the speed at 38.8
