I bought a GSM shield for the Raspberry Pi (version 1, B) and a SIM card to join the proper cellular network. I use mgetty to react to my call, like this:
mgetty conf
which works just fine and the script executes once I call the RPi:
port ttyAMA0
speed 9600
post-init-chat "" ATH0 OK ATS0=0 OK AT+CLIP=1 OK
rings 2
answer-chat "" ATH0
cnd-program /home/pi/caller.sh
The thing I want to do is not only executing the script above (which is currently a dummy script), but also answer the phone call and press a specific button (press *).
Interestingly, there is quite some documentation across the web, how to use mgetty as a dialin modem, but I couldn't find a way to answer the call and send a key. Even this question is unanswered and I cannot post a comment to ping the author of the question...
