How to compose Asterisk + WeBRTC + Websipclient?

Question

Asterisk

Hello, dear gurus, please forgive me for my stupidity or naivety, but if anyone knows how, please help. There is a lot of information on the Internet on setting up Asterisk + WebRTC + Sipml5, but my problem is not solved, if only because the link to download sipml5 is not working, the second reason is that each subscriber will have to register, which is not desirable. Thus, the question of the following nature should be used for the web sipclient "FlasphonerWebCallServer-5.0.2072" there are instructions for setting up the third version, but with the fifth ... Well, in general, if anyone knows, I ask for help or at least advice, it might be worth paying attention to something else ( site visitor (the registered visitor must contact the other two registered visitors to the conference type site)