GSM interfacing to micro controller: need help.

[Rohi231]

I am working on gsm based irrigation system. I successfully communicated gsm with micro contoller.
i called from my mobile to gsm and after 2 ring, call gets activated. For this i used AT command
ATS0=2
Now i want to pass the commands. Like if i press 5 from my number light should on and when i press 6 light should get off.
My question is what AT command i should give for this :!:?

 

[tpetar]

Better use SMS remote control.

 

[Rohi231]

Better use SMS remote control.

Here actually i wanted to convert voice call to data exchange . I have seen this in youtube video.