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This bash script is used for automating the internet connection when using " Romtelecom Any DATAADU-510L "

The tests were made on Red Hat Enterprise Linux Workstation release 6.4 , kernel 2.6.32-358.11.1.el6.x86_64.

Prerequisites:

-wvdial

-usb_modswitch

(if the above applications are not installed, then an internet connection is needed the script covers thispart and installs the needed applications using yum)

Howto Run:

-copy the script to a desired location, such as /home/user_name/Desktop/romtelecom.install

- modify the following lines in the script, in order to reflect you modem values:

#Username = 1000117543@romtelecom1.net

#Password = 1000117543

Note: The above number can be found on the modems case.

-make the script executable

$chmod 0755 /home/user_name/Desktop/romtelecom.install

-open a terminal and run the script using root privileges:

$sudo /home/user_name/Desktop/romtelecom.install

-in order to disconnect the Romtelecom modem, close the terminal window from where you run thescript, or press Ctrl+C in the terminal to terminate the script.

mailto:1000117543@romtelecom1.netmailto:1000117543@romtelecom1.netmailto:1000117543@romtelecom1.netmailto:1000117543@romtelecom1.net

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Script description (what does the script do):

- checking for dependencies: wvdial (dialer), usb_modeswitch (used for switching from the defaultstorage mode to desired modem mode)

- if the above mentioned dependencies are not already installed, the internet connection is checked andif there is an internet connection they will be installed

- creating persistent rule for Romtelecom Any DATA ADU-510L (/lib/udev/rules.d/40-usb_modeswitch.rules)

- creating a file from where usb_modeswitch will take the modem configuration for Romtelecom AnyDATA ADU-510L (/etc/usb_modeswitch.d/05c6:1000:uMa=AnyDATA)

- creating a static naming for our Romtelecom Any DATA ADU-510L modem, using udev(/etc/udev/rules.d/92-tty-serial.rules).

- force udev to reload newly created rules (udevadm trigger)

- check if the modem "Romtelecom Any DATA ADU-510L" was inserted: if the modem is not insertedwithin 5 minutes, the scripts aborts.

- creating the wvdial configuration file (/etc/wvdial.conf)

- run the dialer (the dialer will be put in background)

- stop NetworkManager service

- change the default gateway to the modem remote IP address (the output of the wvdial command willbe sent to a temporary file /tmp/wvdial.txt and from this location the script will take the modem remoteIP address)

- change the DNS servers

Notes:

-IOT get details about the mapping of the USB modem, run the following commands:

#ll /dev | grep ttyUSB -> this will most likely return: ttyUSB0, ttyUSB1, ttyUSB2, ttyUSB3

#udevadm info -a -n /dev/ttyUSB0 -> from the output of this command we'll take more specific detailsabout the mapped USB device.