FaceTime audio to landline
I'm a bit confused, firstly by Apple's UI in the FaceTime app (iOS7) and secondly about what FaceTime Audio in iOS7 can actually do.
Question : Can FaceTime Audio be used to make a call to a landline, via WiFi and/or via cellular and if so, then how do you do this?
(Comment : FaceTime iOS7's UI is confusing, because when you open the FaceTime app, you expect to be using only FaceTime, but in fact, if you make a call by clicking on the telephone icon, it may well be a regular mobile call, which could be international. I have read a thread here on ASC, which looks like this has happened to a few people, much to their surprise/missunderstanding and to the detriment of their bank accounts. Honestly, you'd have thought those days were over. This is still way to complicated.)