The Ringover | Click2Call extension allows you to make calls to all phone numbers displayed on web pages.  

The ringover.com website and desktop app also support the same call mechanism. You can also make calls directly from the Ringover web app.

To call numbers displayed on websites, you need to install the extension from the Chrome Store, then the website must have an "activate the Click2Call extension" or "click the extension to activate it" option.

This extension is compatible with Ringover CTI dialer for Zendesk, Salesforce, Dynamics, and Salesloft.