Hamed, Looks like your modem is supported by hsfmodem drivers: The /proc/asound/pcm file reports: ----------------------- 00-01: Conexant Digital : Conexant Digital : playback 1 00-00: CONEXANT Analog : CONEXANT Analog : playback 1 : capture 1 about /proc/asound/cards: ------------------------ 0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0xfc400000 irq 22 http://www.linuxant.com/drivers/hsf/full/downloads.php However, you need your compiling tools since there might not be a package matching your kernel ? Linux version 2.6.26-2-686 (Debian 2.6.26-17) The kernel was compiled with gcc version 4.1.3 and a compiler is not installed linux-headers-2.6.26-2-686 resources needed for compiling are not manifestly ready! If compiling is necessary packages must be installed, providing: gcc-4.1 make linux-headers-2.6.26-2-686 For Debian and some related distributions, a package kernel-kbuild-2.6-26 may be needed to support driver compiling. Regards, Antonio On 12/17/09, Hamed Mohammadi <hamed@xxxxxxxxx> wrote: > I have a fujitsu-siemens esprimo 5505 laptop. >