When clicking on "Call ordinary phones" button I get a small pop-up with numbers and country prefix to be chosen.
This window has a very irritating problem: it closes down whenever the application loses focus. This means that when I want to check the number I'm dialing in my e-mail program or in the browser, the long string I have already entered disappears. Then I have to re-choose the country (from a list of about 200) and re-type the number. I would expect this cute popping window to remain there, not going away in such intolerant manner. This becomes even more frustrating if you are a slow or disabled typist.