If you need any further help: I recently managed to set up this one; "01:00.0 Communication controller: Intel Corporation 536EP Data Fax Modem" under; "Linux xxxxxxx 2.6.20-16-generic #2 SMP Sun Sep 23 19:50:39 UTC 2007 i686 GNU/Linux" (Ubuntu 7.04 - Feisty?) successfully. I used the 'intel-536EP-2.56.76.0_23_02_2007.tgz' source to compile the driver IIRC. Let me know if you need any help. Cheers, Elroy. P.S: It DOES take a few seconds to initialise things when connecting (even on a Dual-Core 1.86GHZ!!) - you may need to give it a few seconds more - did you listen-in on a phone plugged into the same line? Apparently you also need? a dialer? that is capable of 'stupid'? mode - only had two dialers (wvdial? gnome-dialer?) on my machine that could do it IIRC. E-mail me if you want more info.