AmazonBT to RJ12: UK BT 631A plug on one end and an RJ12 6P6C plug on the other Six Wire: All six wires connected Wide Use: Suits phones, PBX systems, alarm panels and some routers Fits RJ11 Ports: The RJ12 plug also fits RJ11 sockets Cable Length: 3 m white lead
BT to RJ12: UK BT 631A plug on one end and an RJ12 6P6C plug on the other Six Wire: All six wires connected Wide Use: Suits phones, PBX systems, alarm panels and some routers Fits RJ11 Ports: The RJ12 plug also fits RJ11 sockets Cable Length: 3 m white lead