[SR-Users] Help with SIP over Websocket audio call

Hi, New to Kamailio. I have my Kamailio 4.0 server with websocket support, and the users can register using the JsSIP Tryit sample WebRTC application. However, after registration, the users can't place an audio call. I see no ringing on the remote browser. I don't know how to debug this further to find out what the problem is. Can anyone help with clues or debug? In Debug log I can see the websocket ws_frame.c decode the websocket message into SIP, and I see normal SIP call flow for an INVITE. However, nothing indicating a call. With this JsSIP, I can do chat through Kamailio SIP over WebSockets. With this Kamailio server, SIP User Agent Clients work just fine to register and place SIP call with audio. It's just that WebRTC audio calls don't work with JsSIP sample application with Kamailio 4.0 websocket module. Kamailio websocket configuration borrowed from: https://gist.github.com/jesusprubio/4066845 Any help debugging this appreciated. Brad