Maybe the problem is when you've chosen the ISP parameter (FR07 tiscali...)! I think the MA01 exists in the ISP list when running the eagleconfig command!
Maybe you've installed the driver with the "sudo" pre-command (root user), in this case you have to type "sudo startadsl" instead of "startadsl".
Maybe the problem is when
Anyway here's the ISP list : Fournisseurs d'acces Internet.
Try redoing the installation of the eagle-usb driver and tell us if you encounter problems.