Ex-Pro® 10m Ultra Thin Telephone Extension Cable Lead BT Style suitable for extending BT Telephone sockets. White ultra thin telephone extension (can even be installed behind wallpaper !). Easy to use as a Modem Cable or ADSL cable if required, ultra thin RJ-11 Cable, simply connect to your ADSL Filter in the small RJ-11 socket and connect to your ADSL Modem/Modem. Unit is also supplied with an RJ11 to BT socket,which means you can use the cable as a teleohone extension if you wish. Makes life easier with 1 pack fitting all phones, etc... 2 Year Ex-Pro Warranty.