2x Cat5e to Voice (4 Way) RJ45 Economiser / Splitter Turn 1 socket Into 4x Phone
Cat5e RJ45 plug on 150mm lead to 4 x RJ45 sockets, pinout for 4x voice cabling. You need to use one at the wall socket and another at the patch panel socket. Instead of having a labelled socket 1, you now have 1A and 1B on your LAN.