Currently I have a cable modem service, then this feed a VPN router and I have it configured for a static IP. When I set up the LAN should the DNS be set to the ISP numbers or to the Router DNS (192.168.1.1)? I am having issues with having to reload web pages all the time and the VoIP phones are cutting in and out. Trying to determine if it the ISP or my network. Thanks for any advice.