I've implemented a working video chat app using EasyRTC as framework.
If I make video call through my Wi-Fi internet connection, everything is working. When I make a video call through 3G internet connection, I can see list of connected user, but when I start video call to a listed one, I can't see any video or listen any audio (but message exchange is working).
Is it possible that mobile data network carrier limits p2p traffic of video call?