Old Nokia 6210

Hi

I've got an old nokia 6210 phone working with serial (DB9) cable sucefully working with serial terminal in the PC throughout AT commands (sending sms, read sms, ect.). When linking RX/TX/GND from the DB9 to the arduino i got no response in any serial commands. Any ideas? I've been reading about TTL levels and MAX232 converters, would this aply to this?

Regards

If you could connect it directly to a Pc serial port with the DB9 connector, then yes you are right you need the levelshifter to make it compatible with Aduinos serial port.

any tested scheme that works with the arduino / max 232 ? tks

(edit) would this serial work? , original for arduino rx/tx...

http://www.imagearts.ryerson.ca/sdaniels/physcomp/tutorials/arduino_serial/ard_serial.html