Yes, It is correct. You can call virtually any phone number in the world using gTalk with the help of some third party service. Google itself is working on this and hopefully you will be able to make high quality cheap phone calls using gTalk. Till then you may use third party providers for...

  Free international calling service is hard to come by, after all, commercial telephone companies or phone communication operators need to pay connection fee to receiving called party’s providers no matter the calls are made to land line, cell phone or satellite phone, and regardless of it’s...