Sinch: Call from Web getting 'HUNG_UP' automatically

Question

I am trying to integrate Sinch in one of our projects.
I am trying to call from WEB to ANDROID app..
The connection is getting successfully established. But no video is displayed and also call is getting disconnected automatically in 9 to 10 secs...
This is not happening when I am calling from Android App to Web..
I am following code from their Docs for Video Calling.

Log for call:

Notification { progress=0,  message="Successfully added proxy ICE candidate",  object=mozRTCIceCandidate}
Notification { progress=0,  message="Successfully sent JOINED",  object=g}
Notification { progress=0,  message="Call changing state to ESTABLISHED",  object=undefined}
Notification { progress=0,  message="Call was un-muted using unmute().",  object=undefined}
Notification { progress=0,  message="WebRTC: Connection state changed",  object=Event iceconnectionstatechange}
Error { name="SinchError",  domain=-1,  code=1001,  more...} // code: 1001, domain: -1, message: "Ice connection failed. Hanging up call!"
Notification { progress=0,  message="Call HANGUP Received",  object=undefined}
-- ICE failed, see about:webrtc for more details
MXPLog { message="Added meta data to MXP message",  object=r}
MXPLog { message="Identified Encoding Key",  object=r}
MXPLog { message="Split message into frames as needed",  object=r}
MXPLog { message="Identified Tx Channels",  object=r}
MXPLog { message="Transmitting [channel, frame]",  object=[2]}
Notification { progress=0,  message="WebRTC: Connection state changed",  object=Event iceconnectionstatechange}
Notification { progress=0,  message="WebRTC: Signaling state change",  object=Event signalingstatechange}

Why I am getting Ice connection failed. Hanging up call! error..??
I am using Mozilla Firefox to test functionality...
Thanks in advance for your help. I am stuck here...

Answer 1

I worked for hours trying to solve this, at the end I discovered this was caused when both web and android is on the same network (when coding they usually are). It seems sinch doesn't work on same lan.