Hi,
$ usb_modeswitch -v <vendor id of ur modem> -p <product id of ur modem> -M < msg code of as per ur vendor&product code>
Or you can write udev rules for all supported modems.
call "pppd' binary to connect internet.
Q) Can you able to convert your modem from USB to modem device
[ 2859.031421] scsi9 : usb-storage 5-1:1.3
[ 2859.138453] USB Serial support registered for GSM modem (1-port)
[ 2859.138621] option 5-1:1.0: GSM modem (1-port) converter detected
[ 2859.139471] usb 5-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 2859.139510] option 5-1:1.1: GSM modem (1-port) converter detected
[ 2859.140479] usb 5-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 2859.140518] option 5-1:1.2: GSM modem (1-port) converter detected
[ 2859.140871] usb 5-1: GSM modem (1-port) converter now attached to ttyUSB3
Ex:
$ pppd call gprs
Put script named "gprs " for accessing internet through APN commands.