Answers for "call tag html"

html telephone link

One click should open the phone dialler and input the number to be called.
<a href="tel:5551234567">Call (555)123-4567</a>

html make phone number callable

Area code with dashes, 1 and + sign

<a href="tel:+1-555-555-1212">555-555-1212</a>
Area code with no dashes, 1 and + sign

<a href="tel:+15555551212">555-555-1212</a>