htm code when clicked makes a call code example
Example 1: html telephone link
<a href="tel:1234657890">Call (123)456-7890</a>
Example 2: phone number button on website
<a href="tel:5554280940">Call us at 555-428-0940</a>
<a href="tel:1234657890">Call (123)456-7890</a>
<a href="tel:5554280940">Call us at 555-428-0940</a>