wrtc.adv.stop() is used to permanently terminate the wrtc object.
It closes all calls, lines and web sockets, deletes the wrtc object and attempts to close the web page. (Web page close is however restricted by most browsers for security reasons and thus most probably will fail.)
wrtc.adv.stop() is like asking wrtc to kill itself.
The effects of wrtc.adv.stop() are irreversible. The only way to gain access is to reload the webpage and start all over again.
None.
Nothing.