This box sounds very interesting.
Even if i don't plan to use roaming, i have on my landline unlimited call to landline (on many developed county).
And i have a near unlimited calls to my home (same bill for my GSM).
So, calling this box (at home) would be free, and then call any landline would be free
There are many others great combinaisons.
It seems like an asterisk@home box with PSTN and GSM interface.
Does it support SIP ?
Does it support skype without computer ?
i want one of them
(or a GSM interface for my open-wrt router)