The BT VDSL filtered face plate will take the bigger RJ45 plug. 2m length RJ45 to RJ12 made with Cat6a shielded twisted pair cable. Top Quality Cat6a stranded shielded Copper Network Cable made by Excel or Connetix etc.
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UGREEN Ethernet Cable Cat6 Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN Cord
Aliexpress UK
RJ12 is backwards compatible with RJ11. Will fit RJ11 ports and also RJ12 ports. BE AWARE OF FAKE 'CAT6'/'CAT6a' CABLES AVAILABLE ELSEWHERE. They're a gimmick. The cable is shielded with foil and features twisted pairs for maximum signal integrity.
eBay
Ethernet Cable Cat6 Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN Cord for
Aliexpress UK
RJ12 is backwards compatible with RJ11. Will fit RJ11 ports and also RJ12 ports. BE AWARE OF FAKE 'CAT6'/'CAT6a' CABLES AVAILABLE ELSEWHERE. They're a gimmick. The cable is shielded with foil and features twisted pairs for maximum signal integrity.
eBay
Ethernet Cable Cat6 Flat Cable Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN
Aliexpress UK
RJ12 is backwards compatible with RJ11. Will fit RJ11 ports and also RJ12 ports. BE AWARE OF FAKE 'CAT6'/'CAT6a' CABLES AVAILABLE ELSEWHERE. They're a gimmick. This high-quality cable is designed to connect your devices with RJ11/RJ12 and RJ45 connectors.
eBay
Cat6 Ethernet Cable Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN Cord for
Aliexpress UK
Uses a special and expensive extended Shielded RJ12 plugs that are stronger and correctly crimped onto the the outer sheath of the cable. Top Quality Cat6a stranded shielded Copper Network Cable made by Excel.
eBay
Cat6 Ethernet Cable Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN Cord for
Aliexpress UK
The BT VDSL filtered face plate will take the bigger RJ45 plug. Top Quality Cat6a stranded shielded Copper Network Cable made by Excel. (this is more flexible). Uses a special and expensive extended Shielded RJ12 plug these are much stronger/better crimp so stop any chance of cable pull out due to the cable being strained at angles!
eBay
Cat6 Ethernet Cable Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN Cord for
Aliexpress UK
RJ12 to RJ12 (RJ12 fit RJ11 sockets) made with Cat6a twisted pair cable. RJ12 plugs fit RJ11 sockets they are backwards compatible. Red Cable 2.9m long cat6a shielded. Top Quality Cat6a stranded shielded Copper Network Cable made by Excel.
eBay
UGREEN Ethernet Cable Cat6 Gigabit High Speed 1000Mbps Internet Cable RJ45 Shielded Network LAN Cord
Aliexpress UK
RJ12 is backwards compatible with RJ11. Will fit RJ11 ports and also RJ12 ports. BE AWARE OF FAKE 'CAT6'/'CAT6a' CABLES AVAILABLE ELSEWHERE. They're a gimmick. This high-quality cable is designed to connect your devices with RJ11/RJ12 and RJ45 connectors.
eBay
DIYLIVE Pure copper audio cable two core shielded signal cable Fever hifi audio cable Double RCA
Aliexpress UK