I am using standalone JVB without meet and jicofo. Many times I getting the ICE state completed and then terminated on JVB but on browser it is stays in CHECKING state forever. I checked through wireshark that the browser sends the STUN requests which are responded back successfully. But the ICE state does not get connected on browser end. This is happening to me for almost 50% of all the calls. I am using JVB 649.