thank you for your interest!
yes I’ve to look for this USB GPRS modem that supports ARM Linux drivers……. maybe this will be the rock to climb…. I’, pretty sure you will find a more stable sound card…
I was wandering for arduino plus audio codec shields… but it seems that arduino has not enough resources to support both 3g shield and audio codec at the same time……
any way I’ll keep on studying the feasibility…

in the while thank you very much..

ciao

stefano (so I have to avoid to sign myself “Stef” as I usually do!!)