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"Google has now added phone numbers that hyperlink to Google Hangouts for voice dialing and calling.If you search for your favorite place on Google Local, Google may show a big phone number, depending on your query. That phone number is hyperlinked to open using Google Hangouts and do phone dialing and voice over Hangouts.Here is a screen shot showing it in action:When you click the phone number, it opens Google Hangouts in a new pop up window:Then it asks you if you want to call and if there are costs associated with the call:This was announced by Google's Mayur Kamat on Google+ and then reshared by Google+."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-phone-numbers-hangout-calls-18718.html>