Help with Cat5 cable wires' colour coding

[dpaul]

Hello,

I have this Cat5 cable dangling at my celler and provides wired connectivity to other floors of the house (they are now disconnected of course).

I wish to connect then to a patch panel. But the wires' colouring looks different Specially the red and blue coulored wires, please see the pic below.

Now I am aware of the T568-A and -B Wiring standards, but the above one confuses me. In fact the Patch Panel where I will connect has clearly marked places for the A & B standards.

So how do I connect the one show in the picture to my Patch Panel? Can anyone please tell me the colour to colour matching?

Any help is greatly appreciated!

 

[std_match]

I don't think it is a CAT5 cable. Any markings on it?
Maybe it was used for phone or intercom?

 

[dpaul]

Probably not....I am not sure! I also did not see any special markings, but I will check again.
btw - there are telephone sockets at the 1st floor for DSL connectivity. But the cable shown in the pic is not connected to this telephone socket.

Using this cable I MUST transmit Ethernet connectivity from the cellar to the roof floor. The router is located at the celler/basement. I am installing a Patch panel and linking the wires. I do not want to WiFi repeaters.
The cable pic shown runs through the walls, and end up at an RJ45 socket at the roof-floor.

What should I do?

 

[KlausST]

Hi,

maybe a telephone line.
But I see (correct me if I´m wrong) shielding sheet as well as shielding strands. So maybe it is CAT5.

I personally think there is a good chance that it will work for 100MBit ethernet.
Try it. Not much to lose.

The most important: treat paris as pairs (according original ethernet wiring) and don´t confuse polarity of the pairs.

Otherwise: Transmitting a differential signal via two wires of different (twisted) pairs .. will cause a lot of echoing, crosstalk and loss. No high data rate possible.

Klaus

 

[FvM]

Yes, it's telephone cable. Works well for Ethernet, need to define your own pair mapping.

--- Updated Dec 12, 2024 ---

Expect that it even works for 1000BASE-T with reduced length, e.g. 10 or 20 m. I plan to try in my home.

 

[dick_freebird]

I would take a picture of the "good" end to get
the order right and crimp on the "bad" end
connector the same.

But you might also elect to use the "incumbent"
as a pull for a known-proper cable with factory
molded ends. If the cable can be pulled through.
My success rate at clean re-plugging Ethernet
cables is 50% or so.

Might also decide to pull a good "fish line" at
the same time, just in case more wanted some
day.

 

[dpaul]

The most important: treat paris as pairs (according original ethernet wiring) and don´t confuse polarity of the pairs.

Yes I will try that out...keeping "pairs as pairs" and connecting them seems to be the thing to try out!

Thanks everyone for the suggestions.