RS PRO Female RJ11 to Male RJ11 Telephone Extension Cable, White Sheath, 3m | RS
IDEAL Telephone Plug RJ11 6 Position 6 Contact | The Home Depot Canada
NEORTX RJ11 to RJ11 Cable 5ft, 1.5 Meters Phone Cord Telephone Line Extension Cord Cable Wire Male to Male RJ11 6P4C Modular Plug for Landline Telephone Fax Machine (Black)