Things that you will need

1. adobe flash player 9 or higher
2. Head phone with mic.

Note : you can make only one call using an ip in a Day. But it can be exceeded if you have dynamic IP like BSNL broadband then disconnect your internet connection and call again you will able to make another call.

now,
 open your browser and visit the following link :
www.evaphone.com
 then the screen is like as follow.






now enter the country code and phone number which you want to call.
then click on green button and then click on the under advertise then your call will be connected.