Call Prompting option using html tel tag

Jul 22, 2013
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Hi,
I'm developing a html5 application using jquery mobile. I'm having an issue with the call prompting option in android 4+ versions for the below mentioned sample.
<a href="tel:<tollfreeNo>,,,,1" >Call</a>
Here the comma mentioned is a "Pause".
In older versions of android on clicking on the anchor tag, its displaying <tollfreeNo>,,,,1 in the dialer and the call is prompting to the option(1) mentioned.
But in android 4+ versions, it is not detecting the pause or wait. But dialing to the given tollfree number.
Kindly let me know if there is any solution for this.
Thank you in advance!

Regards,
Mahe