STEPS :
1) First Go To Here
2) Enter Receiver And Your mobile number.
3) Click “Call Free" button.
4) First receiver will get a call.
5) When receiver answer the call, you will get a call. Answer it to get connected with the receiver.
6) Done ! you can repeate the whole process again and again to make unlimited free calls.
NOTE :
Duration of each call is around 1 minute.