Go to example.com/administrator and login to your site.
Go to the Template Manager
Click on "Extensions" and then "Template Manager"
Open Your Default Template
rhuk_milkyway is my default template so I'll click on that name.
Open the Template Files
Click "Edit HTML" in the top-right corner.
Paste Free Call Code
Scroll all the way to the bottom of the page and post Free Call code right above the final lines: . Then click "Save" in the top-right corner and you'll have finished.
About Free Call, inc.
With Free Call, your customers can call you for free from anywhere in the world. You will receive that call at any landline, mobile phone, or SIP phone that you designate. Messages are seamlessly built into the software platform.