Hi All
I need to build remote control system working with PIC or any microcontroler via GSM modem. Any ideas, or project similary with this you know please reply
Thanx in 
Why? 
The whole point of Open-AT is that you do not need an external processor!
You write your code, and run it on the modem’s own internal processor! 
That will be great to have this Open-At. Where can I get more info about this Open-AT data sheet, technical infomation please
Open-AT is a Wavecom product - so go to the ‘Products’ section of the Wavecom website.
(it’s the right-most option in the banner across the top of this page - just before the ‘Search’ box)