This converts a RJ11 Male to a BT Female.
EIGHT NEW GREY TELEPHONE LINE CORDS - RJ11 TO BT 4 WIRE PLUG - 3 METRES
RJ11 to BT Socket Adapter, RJ11 4 Wire to BT Female Socket Cable Adapter
LORSENG 1 Pcs RJ11 to BT Socket Adapter, RJ11 4 Wire to BT Telephone Female Socket, Cable Adapter Landline Port Converter Extender FAX Modem Corded Cordless for Seamless Calls & Fast Internet (White)
BT PLUG TO RJ11 SOCKET & RJ11 TO BT TELEPHONE ADAPTER KIT UK USA IRISH CONVERTER
3m, BT Plug to RJ11 Telephone Cable,4 Pin Straight Wired Modem,Router Lead,Black
10m,BT Plug to RJ11 Telephone Cable,4 Pin Straight Wired Modem,Router Lead,Black
