How to connect a mobile phone directly to the microcontroller?
Added after 9 minutes:
DKU-5 connects your Nokia to your computer. Works with Nokia PC suite software as supplied with your phone and enables data transfer and synchronization at a rate of up to 230 kB/s. Driver CD and instructions supplied. Connects to the POP port on the phone and the USB socket on a PC.
DKU5 cable is compatible with Nokia 3100, 3200, 5100, 6100, 6220, 6610, 6800, 7210, 7250, 7250i.