Tripp Lite RJ11 Straight Through Modular In-Line Coupler (F/F). Connector 1: RJ11, Connector 2: RJ11, Connector gender: Female/Female. Product colour: White This coupler provides a simple and easy way to link together two cables with RJ11 plugs. The coupler is wired in a straight-through configuration. RJ11 female to RJ11 female. - Inexpensively extend two telephone cords - Gold-plated connectors provide superior conductivity - RJ11 female to RJ11 female - Straight-through configuration