Add a “2 second pause” in the click to call the service

Question

I am developing a web page to provide the ability to call a service. I want to add a pause of "2 seconds" after dialing [phone], like this

<a href="tel:[phone],456"></a>

shows [phone] in a dialog box on an Android phone, it ignores anything after the decimal point I tried several other ways:

<a href="tel:[phone]p456"></a>

shows +9199999999997456, p converts to 7

<a href="tel:[phone];ext=456"></a>
<a href="tel:[phone];postd=456"></a>

shows only [phone]. None of them seem to work. In some cases, it works fine with iOS and Blackberry. Please suggest me the right way.

Answer 1

"w" . .

Answer 2

, , .

<a href="tel:[phone],,,456"></a>

, , .