GMail added new features, now you can call you phones with you GMail. Logging into your web browser GMail activated this services and try call you phones. This features is amazing, regarding this GMail Official blog, about new services. This is what GMail official blog said
Calls to the U.S. and Canada will be free for at least the rest of the year and calls to other countries will be billed at our very low rates. We worked hard to make these rates really cheap (see comparison table) with calls to the U.K., France, Germany, China, Japan–and many more countries–for as little as $0.02 per minute.
What’s GMail with Call Phones featured Video HD
If you want try this features too Go to GMail.com/call