router settings

Hello, I had an old router and had difficulty with local lan transfers on my PC.. its different issue in this topic: Recently bought a NEW Router and connect same to Internet using PPPOE. Check my Network Diagram.. View: https://imgur.com/a/md4GzS7 Everything is working as required, But...

I've recently gotten my router re set up as it had issues and now i can't get or make any VoIP calls. There's most probably an option on my router's page that i didn't turn on. Everything worked fine before the router re-setup. I don't know much about the options as im only familiar with setting...