Hi, I am experimenting with WebRTC and am failing quite dismally - mainly due to lack of documentation. I realise this is an emerging technology and the standards are moving, but presumably it does work in some scenarios and it would be great if a working setup could be documented. Anyway, I think I might have found a bug, but have no way to tell because I've never been able to get WebRTC working with Freeswitch. Here's my setup so far: * FreeSWITCH Version 1.5.14b+git~20140725T212415Z~c411f8c7a9~32bit (git c411f8c 2014-07-25 21:24:15Z 32bit) * IPv6 addresses - due to shortage of global IPv4 address, I am forced to use IPv6 * SIPJS - http://sipjs.com/ * Firefox 31/Fedora 20 * Apache 2.4.9/Mod_SSL * Startcom SSL cert (which I have configured with Apache fine) What I am able to do: If I setup the internal IPv4 profile with ws-binding, I can use SIPJS to register and can successfully see a user registered in Freeswitch from the browser. I can then use SIPJS to make a call, and my desk phone rings, however I get no media (UDP packets are being sent but presumably neither side can decode it). I also see these errors in the fs_cli debug output though: * **2014-07-27 13:04:12.108836 [ERR] switch_core_cert.c:210 FP FILE ERR!** **2014-07-27 13:04:12.108836 [ERR] switch_core_cert.c:210 FP FILE ERR!** **2014-07-27 13:04:12.148104 [ERR] switch_rtp.c:2975 audio DTLS cert err [5]* But I can find no proper documentation on what is required for DTLS or where to put the cert files. Next up I tried IPv6 in the internal-ipv6 profile: <param name="tls-cert-dir" value="/etc/freeswitch/certs"/> <param name="wss-binding" value=":7443"/> I concatenated the cert, key and chain certs together into /etc/freeswitch/certs/wss.pem and can successfully connect using WSS and SIPJS. The problem however is that although I can see a register, Freeswitch then kills the registration connection a couple of seconds later. It is also showing the registration as using WSS-NAT, how can that be possible on IPv6? How can I turn off NAT detection on the IPv6 profile? Any guidance would be very much appreciated and I will post my setup to my blog and the Freeswitch wiki if I can get it working, to help people in the future. Thanks Tom