A little suggestion about call and vocal

I just noticed something strange that could be a bug and wanted to share it to you.
I called my friend, he didn't answer 'cause my friends hate me, so I decided to call someone else. The calling worked, but by default I wasn't in vocal (my friend was called, but i only could see his single icon vibrating while I was disconnected). IMO, it would be more intuitive if we were automatically disconnected from the first call then automatically connected to the second.

Hope it'll be useful to you ^^