Ya i used a terminal software for that. (teraterm)
And even i noticed that, after these commands i got many Airtel sms'es back to back after some half an hour or so.
But none contained balance info, all had information about added services used.
Thanks for the information, i shall try it out with the actual SIM300 module, it would be clear for me.
---------- Post added at 12:49 ---------- Previous post was at 12:45 ----------
One last information would be better,
Do i get the balance information via sms or via a reply for at command.
And also, is it that every mobile uses these at commands (in their operating system) for call and sms reception, because i find it rather hard to use.