It's very simple.Now a days it is available from not only your
computer but also your mobile phone.Just you install a mobile
application in your mobile phone and register your account.Than you
make unlimited free international call as like your phone call.Just
you need a SIS file supported mobile phone and internet connection.
Fring is a mobile application that lets users communicate with friends
on their popular networks over their mobile phone's internet connection.Fring users make Free Call,Free mobile video call,shire picture,video,text file and many more,from
their friends on fring,and other internet servicess.Such as MSN,Google
Talk,AIM,ICO,Facebook and Tuitter,all through only one central
integrated phone book.
Fring is completely free to download and free use to make calls,video
calls,instant messages and many more,via your mobile phone's internet