How to create cheap four wires untwisted ethernet cable for short distance

[neonix]

You don't have to buy UTP eight wires cable to create local LAN network.

You can use any wires you find, with 100BASE-TX standard, and IEEE 802.3u-1995 specification.

I don't know what is maximum distance, but it work in short distance in home bulding, between rooms. If you have modern switch/router you don't have to care about crossover.

https://www.reddit.com/r/HomeNetworking/comments/zddylt/ethernet_over_untwisted_phone_lines_it_works_how/