yes i’m aware of the port the trunks run on. so besides entering the IP address of the Trunk provided by the ISP there’s no in depth changes that i’ve made on the Trunk. as i say the calls hit my phone and thereafter drop. maybe if i provide a screenshot from the CLI when making a call to an extension it’ll better help?
Are you pointing towards port 5062 on your provider configurations?
Personally, I believe that the IP auth works better on PJSIP, you just need to fill the match field with the IP Addresses or domain of your VoIP provider.