For several years, I’ve run 3 VOIP phones from my house. About a week ago they stopped working. SIP REGISTER started failing. Turns out Spectrum now blocks TCP/UDP port 5060. My workaround is to use a VPN. After that, everything is fine. This reddit thread https://www.reddit.com/r/networking/comments/t8nulq/spectrum_is_rate_limiting_voipsip_traffic_port/ suggests Spectrum was rate limiting 5060 on 300mbps plans, but not on the 100mbps […]