Amazon.com: Advantage ADSL Filter, No DSL Output : Electronics
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
kenable ADSL Broadband Modem Cable RJ11 to RJ11 Black 1m (~3 feet)