Installing/configuring the driver
a. download the driver from
http://eciadsl.flashtux.org/eciadsl-usermode-cvs.tar.gz
b. untar it and run the configuration script (refer README/INSTALL for more details.
c. provide the following details when prompted:
Vid1/Pid1 : 0509 / 0801
Vid2/Pid2 : 0915 / 0802
VPI/VCI : 0/32
d. run the startmodem script. If configured properly, you would be seeing the modem working.
Don't know if it is compatible with Mandrake though. I hear some people had tough time making this work in Red Hat.