How to find twisted pair ends in an existing network?

Question

Cables and wires

Good day to all. The essence of the task is as follows: a three-story building, a twisted-pair network is stretched throughout the building, it is very difficult to physically get to it, it is displayed in the offices in the form of network sockets. On the third floor, all this stuff comes out of the wall in a heap, half of it is not crimped, there are no markings on the cables, technical documentation either. Have you encountered similar situations? Any ideas for a solution other than pulling a new network. In general, you need to mark the cable and understand which one goes where.

Answer 1

Connect the end to 220 - what equipment burned out, the cable was plugged into that)

Answer 2

There is a way. I don’t know what the device is called, but it works like this: one end is inserted into the lantester type with a connector, the other end without crimping is searched for with a magic “screwdriver” like a doctor who. In about a couple of hours, you can find the ends of a beard of 30 cables. Sorry for not knowing. I'm not a networker, I just helped)))

Answer 3

Shorten the ends and run around the offices with the tester :) they didn’t seem to come up with other ways

Answer 4

It all depends on what is available. But in any case, you will have to run (I remember, I somehow ran after a modem flying to the attic ...). For example, some switches have a web interface. Then crimp and turn on the computers one by one and look at which port the link has risen. If the network is on a static IP, you crimp it and turn it on "as is", and then pull the wires one by one.

Answer 5

Here cyclists have already come up with. at one time, many such devices were invented
www.hub.ru/archives/4234

Answer 6

You need a radio network scanner, borrow from a friend or buy your own, cost 15 tr. fuke network

Answer 7

induction tester. From one and a half thousand

Answer 8

We short in the first office. We are looking for a tester for 100 rubles sitting at a common loop.
Found. Let's go to the second office... The difference with the previously proposed option: we don't run around the offices after shorting in the loop, but on the contrary, we are looking for a short one in the general loop. There will be much less running around.