RJ11 Plug to BT socket adaptor. The adapter is commonly used in phone systems to convert an RJ11 socket to a BT socket. Specification: RJ11 Plug - BT Socket Adaptor 6P4C 4 wire cable Cable length between plugs 50mm +/- 5mm Wired as follows:- Wiring Diagram UK RJ11 Wire Colour 3 2 Black 2 3 Red 5 4 Green 4 5 Yellow
