driving a SIP softphone in Creator

driving a SIP softphone in Creator

I've already installed a SIP phone client (Bria) and set the browser default.

Not sure why this won't open a new window as an easy way to drive a softphone call?

varX = input.Main_Phone_Number.getAlphaNumeric();
openUrl("sip:" + varX,"#Script:page.close", "same window");