How to control a mobile phone using a PIC (16C74B)?

[JohnBoyLintz]

Could somebody please help me or point me in the right direction of how to control a mobile phone using a datalead and a PIC (16C74B) ?

It is for an alarm project for which I would like the PIC to:

1) Send an SMS text message
2) Answer an incoming call so that the caller can 'listen in' on where ever the phone might be
3) Be able use DTMF tones to activate relays etc. once the call has been answered (having entered a correct PIN number).

I have a spare Nokia 8210 (the display does not work) and a Sony Erricson T68i (the keypad does not work).

Am I correct in saying that the communication will use either MBUS or FBUS on the phone and USART on the PIC?

I have written a couple of programs in assembly on the PIC so I know the basics but I have no idea where to start for this project.

Does there need to be a constant communication between the phone and the PIC?

Or does it just need a wake up call to establish a connection?

I snooped on the Nokia 8210 Tx/Rx lines with a scope using a datalead I made whilst running Logo Manager. There was a constant data stream but this may have been to update the Battery Level and Signal Strength symbols in Logo Manager?

What data command do I need to send the phone so I can send an SMS text or answer an incoming call ?

Will there be any differences between using different models of Nokia phones or different makes of phone like the T68i? Or is there a standard comms protocol?

Any help or software code would be greatly appreciated.

Thanks

John

(email: [email protected])