Google Inc. (NASDAQ:GOOG) now lets you make phone calls through the Hangout window feature on Google+. To make a phone call through Google+, follow these steps:
1. Click Invite at the top of the hangouts with extras window
2. Click the Phone tab on the left of the window, and enter the phone number you wish to call.
3. Click Call now.
Making phone calls through Google Hangouts is one of the many new features that the search engine company added to their social network. Other recent additions includes a mobile version of Hangouts and screensharing. There is also a doodling/note taking program and Google Docs sharing on Google+.