Thanks for your advice Sir but I don't think I can't afford to buy two that's why I joined this forum.
Thanks anyway.
I actually bought a book on PIC. I'm very interested to develop projects like you guys but right now I need to study AT commands.Thanks
Then study AT commands.
www.google.com
search for Hayes Modem AT Command Set
Sony Ericsson Gm29 is good. compact module 12v external antenna, standard AT + model specific commands. Nifty feature, has handset socket that allows a standard handset from a land line phone to be connected. this allows two way phone conversation once you have initiated the call with the AT command. I have used this feature for fault finding.
I've used Falcom Tango and Telit EZ-10 modules for development with success. Falcom allows condenser mic to be directly connected, Telit is well priced
www.falcom.de
www.telit.com
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