I manage to get webrtc call working from 2 chrome browser in different computer using inbound-media-proxy mode (video and audio working in both direction). When disabling the inbound-media-proxy mode (to default), in freeswitch it stuck on Audio OFF to HANDSHAKE. There is no video or audio. I am using Ubuntu 14.04 and my FS box behind firewall and NATed using portforwarding. Because it is working in inbound media proxy so, I think NAT configurations is OK. May be something wrong with DTLS-SRTP? Donny.