[jitsi-users] Other participants audio & video is not working -only chat & self video is visible

Dear Sir,
Please help me , its not resolved yet
I am not able to see other participants audio and video , but chat is working fine between participants . participant's self video is visible.
I have referred several issues (ex.267,277,234 etc.)but i believe my issue is different,hence pls help me
I installed this on Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-66-generic x86_64).
This is a Virtual server in cloud and I am connected to that network over VPN(and the other participant as well) .iptables is disabled.I Tested in meet.jit.si and is working fine.
java version "1.7.0_79";OpenJDK Runtime Environment (IcedTea 2.5.6) (7u79-2.5.6-0ubuntu1.14.04.1);OpenJDK 64-Bit Server VM (build 24.79-b02, mixed mode)
I have enable to capture ALL logs , and willing to share the jvb.log file.I am sharing few of the observations from the logs as below:INFO: [10] org.jitsi.impl.configuration.ConfigurationServiceImpl.info() failed to find jitsi-defaults.properties with class loader, will continue without it
WARNING: [23] org.ice4j.socket.MuxServerSocketChannelFactory.() ICE4J does not support sharing of listening endpoints (probably because it is not running on JDK 8).
2015-10-22 15:57:18.994 WARNING: [23] org.jitsi.videobridge.IceUdpTransportManager.warn() Failed to initialize TCP harvester on port 443: java.net.SocketException: Permission denied. Retrying on port 4443.
2015-10-22 15:57:18.995 INFO: [23] org.ice4j.ice.harvest.MultiplexingTcpHostHarvester.addLocalAddresses() Not using link-local address /fe80:0:0:0:250:56ff:fea7:5116%2 for TCP candidates.
2015-10-22 15:57:19.001 FINEST: [23] sun.net.www.protocol.http.HttpURLConnection.plainConnect() ProxySelector Request for
2015-10-22 15:57:19.514 INFO: [23] org.jitsi.videobridge.IceUdpTransportManager.info() Initialized TCP harvester on port 4443, using SSLTCP:trueI tried to update few configs as per issue 267 but still the above error. kindly help .Appreciate your support! Regards,Asik.S

jvb.log (3.44 MB)