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): Industrial & Scientific
Curly phone cord and RJ11 4 wire 1m - Cablematic
Zenith 50-ft Flat RJ11 Telephone Line Cable | Lowe's Canada