hi all,
i learn from most at command pdf, they teach me just simply type atd01234567 then can make data call for transfer data. but i always failed on it. i only can make voice call by atd01234567; so i dun know hat is the problem. and i looking for code to set my modem to data mode also not found. one of the command which is ATO mean change to online mode, but i show "No Carrier" to me. wish can get help. or can suggest me which book has related information about GSM and GPRS. thanks~