Hi Ben,
I'm a fan of your work and show 
. I was wondering if you could bulk this and maybe improve it a bit.
This will be very useful for people who are living away from their country and want to avoid ridiculous international call chargers.
http://www.raspberry-asterisk.org/documentation/gsm-voip-gateway-with-chan_dongle/
I was researching about this but could not find any good tutorials about this apart from this one.
If you think it is a project worth doing I would very much like to see this happening and build one my self.
Thanks,
Isuru
