I tried to place a call to sylkserver 3.0.1 conference using m=audio 9 UDP/TLS/RTP/SAVPF 109 9 0 8 and sylkserver responded with SIP/2.0 488 Not Acceptable Here Is it so that conference service does not directly support webrtc media, but a gateway (provided by sylkserver) needs to be used? -- Juha