Anyone seen such cabling?



  • Really wanted to share this with all, but image upload doesnt seems to be working.

    Have you see this type of cabling? Visited one office and found that this cable is connected from wall jack to an airport extreme, one end to the internet port and the second to the lan port! I have no clue why and how this worked. Something really new to me! :)

    cabling



  • Ahhhh the elusive "Category 6F(ail)"



  • lol - sadly yes.



  • I was asked by the guy to connect a wifi access point replacing the old device, came in thinking that it won't take more than 30 mnts. The real job only took few minutes, but spent 4 hours fixing the stupid cabling job done by the previous vendor! My god, that was horrible, one of them is this cable, and from the main internet line, the old vendor took RJ45 connector and then split the cable in two to by using 2 more jacks and then connected 2 switches!

    Can't believe how people do this kind of jobs and survive the market.



  • wow brilliant idea:thought_balloon:


  • Service Provider

    @Ambarishrh said:

    Really wanted to share this with all, but image upload doesnt seems to be working.

    Uploads are not working but inserting images still works.



  • Eh,... not so fast..

    CAT5e uses all 8 pins. CAT3 usings just four. as an emergency stop gap, I have done this. but only because I didn't have much of a choice at the time.



  • @gjacobse said:

    Eh,... not so fast..

    CAT5e uses all 8 pins. CAT3 usings just four. as an emergency stop gap, I have done this. but only because I didn't have much of a choice at the time.

    I should mention, it was for a pair of printers, that I could not run more cable for,.. so I split it at the switch and at the wall jack.


  • Service Provider

    @gjacobse said:

    CAT5e uses all 8 pins.

    Technically, no it does not.

    Gigabit Ethernet uses all 4 pairs. Fast Ethernet only uses 2 pairs. Both can be ran on Cat 5e or even on Cat 5. I've seen it stated that Gigabit uses only 3 pairs, but I've never tested or researched this.


  • Service Provider

    CAT5(e) is just the cable itself. It's the different Ethernet standards that can be run over CAT5, CAT5e, CAT6, etc. that determine how the different wires can be used.

    The weird "double headed snake" think from a single UTP cable used to be "common", meaning we used to see it once in a while. It was never good, but it mostly worked and was really cheap.



  • I've not seen anything that bad but I have used analogue/digital splitters (for putting analogue and digital signal down one network point. You then have to split out again at the patch panel)... It makes the comms racks look really messy but it means you don't have to drill holes and pull cables through expensive apartments



  • why would you need this?

    By default the center pair of wires are where they are so you can use a mail RJ11 in a RJ45 female plug, no converter needed.



  • @Dashrender said:

    why would you need this?

    By default the center pair of wires are where they are so you can use a mail RJ11 in a RJ45 female plug, no converter needed.

    <Robert De Niro>
    You talkin to me?
    </Robbert DeNiro>

    lol

    Well, when you have one network point and two services that need to go through it...



  • How much are those dongles?

    A cable run costs me about $120/ea if I have someone else do it. If I do it myself, eh, It might be less, though not likely.



  • @Dashrender said:

    How much are those dongles?

    A cable run costs me about $120/ea if I have someone else do it. If I do it myself, eh, It might be less, though not likely.

    Not sure now... but I think it was $6.
    To a Not-For Profit, $12 per pair is hard to top plus the added flexibility because the residents were always changing their minds



  • I wonder how badly speeds are affected by running ring tone down the same cable as ethernet?



  • @Dashrender said:

    I wonder how badly speeds are affected by running ring tone down the same cable as ethernet?

    Voice quality was good and ethernet was stable and seemingly unaffected.
    The apartment network design was a total balls up and the ugly splitters were an inexpensive solution to a problem that wouldn't have been there is more thought was put into the network termination points. :(



  • @Ambarishrh I had such a cable for an old line tester except that it had an RJ45 and RJ11 plug so I could easily tone to different lines.

    Yeah it's a hack job, but it worked for what I needed.

    Running 2 printers off of something like this, yes it's shady but it works.


  • Service Provider

    @Dashrender said:

    I wonder how badly speeds are affected by running ring tone down the same cable as ethernet?

    Fast Ethernet only ever uses 2 pair. So really nothing too bad here.



  • @JaredBusch said:

    @Dashrender said:

    I wonder how badly speeds are affected by running ring tone down the same cable as ethernet?

    Fast Ethernet only ever uses 2 pair. So really nothing too bad here.

    And we are talking about 2v on hook. This isn't much in the grand scheme of things. If it's standard telephone, off hook would be 50v to hold the circuit open. And that's if it was coming from a central office on a POTS line. On a PBX, the voltage to hold a line open is considerably smaller.

    If someone was using flat 8 strand to run their ethernet along with a POTS line to the endpoint, perhaps there would be a problem.



  • I have witnessed installation of such cable first hand many times. It happened a lot in the past, before 1Gbit became affordable, and customer wouldn't want to run another cable. My co-worker used to love these kind of "hacks", and it worked without any issues at 100Mbit. He even did poor man's POE over similar setup - power plugs/jack on both ends of the cable.


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