TWIN PACK RJ11 Socket/Plug & BT Male/Female Telephone US - UK & UK - US Adapter
US RJ11 Plug to a UK BT Socket Adaptor. UK BT Plug to US RJ11 Socket Adaptor. UK RJ11 Wire Colour. 2x Adapters - Allowing you to convert both ways. Off Subject : Tech. MPN: P221E.