I have found this file on the Arduino site that has the AT commands that are really useful when talking to any modem, in my case I have been using the GSM shield and this is the manual that covers the chip on my shield, a Rev 3 telefonica board.
I have found this file on the Arduino site that has the AT commands that are really useful when talking to any modem, in my case I have been using the GSM shield and this is the manual that covers the chip on my shield, a Rev 3 telefonica board.
