Arduino GSM/GPRS/GPS Shield - Incoming Call / SMS

Hi all,

few month ago I’ve bought a “GSM/GPRS/GPS-Shield”.

I would like to receive the GPS coordinates (via SMS notification) by sending a SMS to the board or calling the board (SIM card included).

I don’t have any ideas to implement such a function.

How can I trigger an incoming telephone call?

I’m using the following shield:

http://www.antrax.de/en/product?info=55

The library isn’t really helpfull for me.

I’m very grateful for any help.

myRobot