you can make a free of cost call from your number using your Internet conection to any mobile number where ever it is in the world.for this just make your registration in
www.tokiva.com against your email.Then wait for an e-mail activation.log on to the site using your password.then make a call following the instruction there.
you can talk to your desire number for three(3)minutes only after getting the connection in tokiva.com.Remember this is a trail call & you can make only one call from your mobile number.