List of steps to set up GSM modem on Ubuntu

After rebooting or waking up from hibernation on Ubuntu, the GSM modem is detected as a storage device, as shown by the CD-Rom icon on the GNOME desktop.

Follow these steps to set up and verify that the modem is working

• run "sakis3g switchonly" command. The result should be successful, with the output message "Modem switched to 1c9e:9603." The CD-Rom icon should disappear from the desktop.
• do "ls /dev/ttyUSB*". Make sure the modem shows up as /dev/ttyUSB* devices (/dev/ttyUSB0, /dev/ttyUSB1, /dev/ttyUSB2).
• run "minicom -s -c on"
• inside minicom

• select "Exit" to exit the configuration menu, and start using minicom.
• type "AT", press Enter make sure the response is OK.
• type "AT+CMGF=1" to set to text mode, press Enter, the response should be OK
• type "AT+CMGS="+1408xxxxxxx", press Enter , the prompt > should appear next
• after the prompt >, type the SMS text
• type Ctrl-Z to end the SMS text
• should see the response "+CMGS: " followed by "OK"

If the SMS is received by the intended mobile phone, then the GSM modem is working.

Note: this assumes the minicom serial port configured in /etc/minicom/minirc.dfl

# Machine-generated file - use "minicom -s" to change parameters.

pu port                /dev/ttyUSB2




Type "Ctrl-A Z" and "X" to exit minicom.