LAN via RJ-11?

Question

Computer networks

Hello. Is it possible to organize a wired network (LAN) via RJ-11? (if yes, how to organize it?). I explain:
In the apartment in every room, in the walls, there are RJ-11 sockets for the telephone. There is a router in room number 1. There is a PC in room #2. Is it possible to start up a twisted pair from a router (RJ-45), compress it under RJ-11 and connect it to a telephone socket in the network, i.e. make a cable with rj-45 on one end and rj-11 on the other? Similarly, in room number 2, connect the PC to the telephone socket and, as a result, get a wired connection with the router. Sorry for the terminological errors, I'm not an expert :)

Answer 1

what cable between sockets? if there are 2 pairs - you can try,
but you need to understand one thing - the laying of pairs in Cat 3/5/5+ is not accidental, the laying step determines the inductive qualities of each pair .. in other words - even if you have a 4-core telephone wire there * - it does not have a twist of pairs, and depending on the length of the cable, packet losses will increase
for example - a long time ago, when I crimped my first 100 Mbit network, pairs were not taken into account, it was just a repetition of the pattern according to the rules - with a cable length of more than 8 meters, communication became unstable, after enlightenment by a more experienced colleague, communication, on the same cable, became excellent on tails up to 50m (and more was not needed in that office)
ps * - 4 core wires are different, in principle there is also a twisted pair (in which there are 2 pairs, even providers often use them to save the cost of the final connection in apartments) but in telephony, a flat 4-core cable is more often used - it has a length cable will dramatically negatively affect the quality of
pps communication - well, as already mentioned - 2 ethernet cores will not work at all
ppps - all experiments with ethernet can only be carried out if you know for sure that the sockets are connected point-to-point.. if they are connected to a real telephone network - this is a guarantee that the network will not rise, and there is a very big risk of ruining network cards

Answer 2

Let's start with the fact that RJ11 is not a connector type :) Suddenly? This is a type of wire crimp, and the connector is called 6P6C - a six-pin "narrow" (aka "telephone") connector. RJ11 is a wire crimping scheme that uses only two center wires. And if you actually have it compressed according to this scheme, no Ethernet will work (10Mb might work , but these days it's just ridiculous :D). If you have RJ14 / RJ25 crimped (two or three pairs, respectively, the latter option is also called RJ12) - an option widely used in PBXs for "system" phones - you can try if the distance is short, it might start. Why maybe? Because UTP is not only valuable furtwo pairs of wires, it is also a twist of them in a certain way. I met a g..nrowire that did not want to work at 100Mb even with 100% correct crimping - it didn’t work :)
Very good article on this topic By the way, mindtester
quite rightly noted - if these connectors are part of the telephone network - you are at risk burn the network, because the ringing voltage supplied to the line from the PBX is 60V for an analog set

Answer 3

https://ru.wikipedia.org/wiki/10BASE-T
No, on the 1st "noodles" it is impossible. Need 2 pairs.

Answer 4

If you have a cable with 4 cores in your wall, then you can
If 2 - alas (but it seems like 10 megabits can be raised on 2 cores, I'm not sure here)