Even for future proofing as fibre optical digial cable is the modern future proofing option if deciding to spend more than this. They're impossible to fit RJ12 plugs so they use fakes with strandsinstead of solid wiring like mine!
eBay
This cable can be used to connect your ADSL Modem (with an RJ11socket) to the Filter/Splitter. plugged into your BT ADSL enabled wall socket. Connection: 4 Pin RJ11 to RJ11. Suite for ADSL connection.
eBay
2m RJ11 to RJ11 ADSL Cable. This cable can be used to connect your ADSL Modem (with an RJ11socket) to the Filter/Splitter. plugged into your BT ADSL enabled wall socket. Suite for ADSL connection. Connection: 4 Pin RJ11 to RJ11.
eBay
• RJ11 to RJ11 cable( Pins Gold Plated ). This cable can be used to connect your ADSL Modem (with an RJ11 socket) to the Filter/Splitter plugged into your BT ADSL enabled wall socket. RJ-11 to RJ-11on both sides.
eBay
Fitted with a BT style 4-way plug [431A] at one end. Fitted with an RJ11 (6P4C) style plug at the other end. As ADSL requires RJ11 to RJ11 cable. This 4 pin Crossover cable is used for many latest models like BT and Panasonic.
eBay
BT to RJ11 Modem Crossover Cable - High-Quality Copper Core Cable for Optimal Connectivity. This RJ11 to BT Plug crossover modem cable is specifically designed for optimal conductivity and reliability.
eBay
5m RJ11 to RJ11 ADSL Cable. This cable can be used to connect your ADSL Modem (with an RJ11socket) to the Filter/Splitter. plugged into your BT ADSL enabled wall socket. Suite for ADSL connection. Connection: 4 Pin RJ11 to RJ11.
eBay
This cable can be used to connect your ADSL Modem (with an RJ11socket) to the Filter/Splitter. plugged into your BT ADSL enabled wall socket. Connection: 4 Pin RJ11 to RJ11. Suite for ADSL connection.
eBay