BT FEMALE SOCKET TO RJ11 MALE PLUG,UK TO USA/IRISH PHONE/MODEM ADAPTER/CONVERTER
To allow it to plug into an RJ11 socket. This is useful for dial-up. RJ11 to BT Style Adaptor. RJ11 (6P4C) PLG TO 431A SKT. This adapter is very easy to use. You just plug the adapter onto the. Small and lightweight adapter.