click to call phone extension smartphone

Question

Looking to call a phone number and extension from clickable link in a smartphone, example (212)-555-1212 Ext.456 and then an extension number

I have tried

<a href="tel:(212)-555-1212,456">Call me</a>

and also

<a href="tel:(212)-555-1212p456">Call me</a>

Both resulted in phone (Galaxy Note 4) calling (212)-555-12127456

I could not find how to add the extension number after a pause.

Answer 1

Try this- Use ext attribute

<a href="tel:+44-1234-56788;ext=88">+44-1234-56788</a>