Hello! I am trying to replace a wall plate having a small phone plug with an rj45. First time doing this.

The cable itself is a cat5e. On the other end near my switch, there is an rj45 already wired in, so I wanted to check it to know if it’s wired A or B, to replicate on the wall plate. But I have this in the photo… 1-2 is blue ?

How should I wire my rj45 keystone for the wall plate ? T568A or B ? Or following the current colors/numbers ?

This a 2016 construction, in Quebec, Canada.

Thanks a lot!

  • up4whatev33@alien.topB
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    1 year ago

    Couple issues here… you tx on 1&2 and rx on 3&6… if you need a xover then you flip one end… that being said the colors are wrong… they are just punched in order in the pic which is what you’d do for phone. The pairs are wrapped at different rates which matters from an Ethernet standpoint. So re punch WO O WG B WB G WB B and flip the tx/rx on one end of you need a xover (but you prob don’t)

  • neon_overload@alien.topB
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    1 year ago

    This particular port is not suitable for ethernet, it’s for analog phones.

    You probably should replace it to be to up spec.

  • aerocheck@alien.topB
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    1 year ago

    Pull the wires, start jumpering pairs and meter it out at the other end. You will be able to figure out what the pin out is as the plug end and then set it up however you choose. But the other suggestion about just cutting both ends and wiring as B is the best. Just giving you an option if you don’t want to cut the other end

  • bizarre_seminar@alien.topB
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    1 year ago

    I reckon it’s B. Green is the second pair in A, and orange is the second pair in B. If blue is on pins 1-2, as it seems to be going by the numbers moulded in the plastic, and orange is on pins 3-4, orange is pair 2.

    (Not an expert, might be wrong, would love to have it explained to me why I’m wrong if I am wrong)

  • Nanotec51@alien.topOPB
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    1 year ago

    Type T568A won: I am currently typing on a PC wired into the new keystone! Thanks a lot everyone for the help, every comments have been very useful.

    Here is the final punch for the curious: https://imgur.com/a/Z5KSvPu

    My first one ever, I am super excited. It’s not perfect but it works for my immediate needs.

    I will probably redo the full patch panel + wall connections in the future, inspired by the great stuff shared in this sub :)

    Thanks again!

  • pdt9876@alien.topB
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    1 year ago

    Unless you’re using hardware from 30 years ago it shouldn’t matter if you end up making a crossover cable or a straight through cable.

    • CharacterUse@alien.topB
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      1 year ago

      Jacks don’t necessarily have the punchdowns in pair order, they “fix” the order in the traces between the punchdown and the socket. This makes it easier for an installer to just go pair by pair.

      u/DiscontentedMajority posted the datasheet, this punchdown order is correct for this jack for T568A. Always check the datasheet or instructions, or verify with a meter.

  • Somhlth@alien.topB
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    1 year ago

    Can’t tell without a legend as to what pins are mapped to what punchdown. That would likely have come with the jacks when they were purchased. Look at the other end, and then just wire your new wallplate according to that, or trial and error, as you have a 50/50 shot. Just don’t trim your ends until you test it, and leave a touch of extra cable, so you can just pull them out and punch it down the other way.

  • Sleepless_In_Sudbury@alien.topB
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    1 year ago

    Try to get a probe from an ohm meter on the solid orange wire and use the other probe to find the pin it is attached to. If it is on pin 6 it is 568A, if it is on pin 2 it is 568B.

  • DiscontentedMajority@alien.topB
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    1 year ago

    I was able to track down the data sheet for this exact jack. The blue color of the punch-downs indicates that this is a T568A pinout.