Anyone know where to grab an example config for getting web socket-sip working.

I tried this one but its failing on kamailio restart it might be some very small thing.

https://github.com/havfo/WEBRTC-to-SIP/blob/master/etc/kamailio/kamailio.cfg

wss://sip.kamailio-box.com:8080

Client = sip.js (webrtc)

SIP server = (mitel) PBX (straight sip)