Comment 1 for bug 1306203

I tested multiple calls in image 291, to verify it doesn't work before landing this branch. Much to my surprise, it worked.

Dialer -> call someone.
Left-edge swipe -> contacts -> select contact -> call.
Suddenly two calls are active.

I didn't actually think it would work though, and tried to cancel the second call... and, again to my surprise, the 'hang up' button doesn't seem to work in that situation. I had to hang up using the first phone I called, wait for the Ubuntu phone to notice, and then I could make the second call end.

I think I'll wait to continue testing until I can get a third phone in the same room, which should be in a few hours.