Do you know any service like this:
Globalsim SIM Card, Free roaming in 50 countries world wide!
but in US, HK, Thailand, Singapore or Puerto Rico?
The idea is to have a SIM like that from one of these countries - thus a mobile number in them - to where usually we can find voip providers that we can call mobile for free (Betamax for instance).
This way I can use the voip provider to forward TPAD and SipBroker calls to the mobile and roam for free worldwide! And my parties will save calling local landlines!
So...do you know?