Hello all!
I have tied to break the Firefox extension and failed miserably so far!
As Voxalot is an Australian product, I thought I would try to dial some Australian numbers.
Using
yellow.com.au - Keyword Search
the onscreen listing always includes (0x) then the phone number.
If I highlight, right click, select "Call via Voxalot" the brackets get stripped out but not the leading zero
Fortunately, if I uncheck "Dial Immediately" when the web callback page appears I can highlight the stray zero tap in 61 for Australia and the call goes through