Am Dienstag, 5. Oktober 2010, 17:58:11 schrieb Ramya Desai: > The debug messages I captured after connecting the device to the > LInux system are, > ------------------------------------------------------- > [32646.880029] usb 2-2: new full speed USB device using uhci_hcd and address 12 > [32647.053397] usb 2-2: configuration #1 chosen from 1 choice > [32647.056423] cdc_acm 2-2:1.0: This device cannot do calls on its > own. It is not a modem. > [32647.056452] cdc_acm 2-2:1.0: ttyACM2: USB ACM device > [32647.296031] usb 3-1: new full speed USB device using uhci_hcd and address 12 > [32647.450676] usb 3-1: configuration #1 chosen from 1 choice > --------------------------------------------------------- > > I don't know, whether I am following the correct procedure to > communicate with my CDC device. You are not following the correct procedure. The driver for CDC ACM devices is cdc_acm. According to your log it is autoloaded. Use /dev/ttyACMx to talk to your device. HTH Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html