The premise is simple. Call abroad through your regular carrier and you’ll pay (typically steep) international rates. If you’ve got a generous data plan, on the other hand, why not send that call via your data connection and pay practically nothing?

That’s the idea behind VPhone, a product of 10-year-old Australian firm Matrix Knowledge Management. The application is available to consumers for $2 and also to VoIP Service Providers (VSPs) for them to white label package as an ancillary service to their customers.

News Source: http://www.voipplanet.com