Can you be more specific on how to do that? I'm not a Debian user, but it should be mostly the same procedure (I'm using Slackware kernels 2.4.26 - modem works & 2.6.7 - doesn't work). Is it applicable to Pctel HSP Micromodem found onboard with C-Media sound card (on the same chip - cm8738), PCI_ID: 13f6:0211? Thanks in advance! mAXX