AVR-Chat

David McNab wrote:
>
> Hi all,
>
> I'm looking around at the available chips/modules for cellular network
> access, particularly gsm/gprs.
>
> One desired feature is the ability to control a device via SMS text
> messages. Another feature is the ability to make a regular TCP
> connection from the internet, and reach the device via the cellular GPRS
> network.
>
> So far, my search for the simplest/cheapest devices has come up with one
> main candidate - the TelIT GM862-QUAD-PY, a python-scriptable GSM/GPRS
> module with built-in SIM card socket, which talks AT commands over
> CMOS-level RS232, and can also perform voice telephony. Described at:
> - http://www.sparkfun .com/commerce/ product_info. php?products_ 
> id=279 <http://www.sparkfun.com/commerce/product_info.php?products_id=279>
> - http://www.telit. co.it/product. asp?productId= 96 
> <http://www.telit.co.it/product.asp?productId=96>
> Price is moderate - US$140 - but I baulk a bit because it's way above
> the price of entry-level cellphones.
>

     Well, of course it is.  You're looking at purchasing one unit.  If 
you were a Cell phone manufacturer, [purchasing such ICs in 100,000 or 
greater QTYs, I thihnkn you'd find the pricing far more palatable.