This cable can be used anywhere a 2 or 4 pin RJ11 connection is required but are most commonly used to connect your ADSL Modem (with an RJ11 socket) -. to the Filter/Splitter plugged into your BT ADSL enabled wall socket.
This product would be ideal for individuals or businesses requiring an Ethernet connection between their broadband modem and other equipment, particularly in DSL or ADSL internet applications.