Comcast Xfinity Self Install Internet Digital Phone Cable Kit w/ Coax & Splitter | eBay
Spectrum Packages: Cable TV, Internet - 1-855-840-0082
Amazon.com: RJ11 Cable ADSL 3ft Extension Lead Phone Cord Telephone Plug High Speed Xfinity Internet Broadband Male to Male Router and Modem to RJ11 Phone Socket/Microfilter/Landline Wire (Black) : Electronics
Phone and computer connection diagrams | Lumen
Turn Off WiFi! Hard Wire Your Home and Devices With This Kit! – Tech Wellness