I can launch Spark and initiate a text chat using xmpp uri, can I do this with Voice chat?

Spark Spark Support
1

Hello all,

I currently have the users roster embedded in a webpage and when they click a person, it will launch Spark and initiate a text chat with this person.

I did this with an XMPP URI.

I was wondering if it was possible to do the same but initiate a voice chat instead of a text chat.

Thanks in advance.