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General discussionRj11 connector on cat 5 cable?(22 posts)(22 posts)
(22 posts)
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Posted January 27, 2016
I know that this sounds weird but hear me out, i want to replace my current adsl cable (rj11) and it's hard to find a store that sells that cable (already with the connectors or just the cable and i'll do the rest) around here, since i have a cat 5 cable around here (broke the connectors a while ago) i was wondering if i could use that instead or would i run into some kind of interference.

Why don't i just order a adsl cable from amazon? Well, for a while that i have been thinking of getting a crimping tool (rj45/11) and some connectors since there's always some kind of problem with cables around here (house/family/friends) and for the long term it would be cheaper just to fix them myself since i know how to do that.

And yes, before you tell me, i know that the cat 5 cable is ticker than the rj11 connector but if i cut the 4 wires and leave the plastic out then it should fit.
Posted January 27, 2016
Technically.. probably.
It's probably just a matter of linking the correct wires on both ends.
Still, I personally prefer factory made cables.
Posted January 27, 2016
I don't see why it shouldn't work. Cat 5 cableis usually superior to the normal phone cables so impedance should be lower...
Posted January 27, 2016
But won't i run into any problem considering that the adsl cable have a much lower frequency than the cat 5 cable?
Posted January 27, 2016
Sounds like you really want to do it, so do it. :)
Posted January 27, 2016
I've used telephone wire before for Ethernet connections, taking up 6 of the 8 slots. Worked fine for a long time, although it could be quite temperamental if it wanted to work or not.

Home Depot is your best bet to get those tools, wire and heads in bulk.
Posted January 27, 2016
Best use of a cat5:

http://geekologie.com/2011/05/kinky-computing-ethernet-cable-fetish-wh.php
Posted January 27, 2016
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skeletonbow: Sounds like you really want to do it, so do it. :)
Lol, kind of, i don't want to order 50m of rj11 cable from the mainland. :)
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rtcvb32: I've used telephone wire before for Ethernet connections, taking up 6 of the 8 slots. Worked fine for a long time, although it could be quite temperamental if it wanted to work or not.

Home Depot is your best bet to get those tools, wire and heads in bulk.
Bit confused, isn't telephone 2 wires, adsl 4 wires and ethernet 8 wires? As for the tools, bit hard to find those around here and it's probably cheaper to order those from amazon, i could also just order the cable from there (complete or "do it yourself") but like i said i want to "recycle" my cat 5 cable.


Edit: The fun part of all this is that i'm ordering 50 rj11 connectors because it's the only one that sends to Portugal and fulfilled by Amazon. At least its cheap....
Post edited January 27, 2016 by Cyraxpt
Posted January 27, 2016
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Cyraxpt: Bit confused, isn't telephone 2 wires, adsl 4 wires and ethernet 8 wires? As for the tools, bit hard to find those around here and it's probably cheaper to order those from amazon, i could also just order the cable from there (complete or "do it yourself") but like i said i want to "recycle" my cat 5 cable.
Not sure. It could be intended for 2 lines, plus 2 grounds.
Posted January 27, 2016
IIRC
RJ11 does have 4 cores, but only 2 would be used for data. rtcvb32 is most likely correct about the other being used for ground.

Now we used to route our phone system through a cat5 patch panels so swapping from RJ11 to RJ45 works.

I'd google to check pairing though.
Posted January 27, 2016
Connector on cat.. no, I won't do any lame joke.
Post edited January 27, 2016 by phaolo
Posted January 28, 2016
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Cyraxpt: I know that this sounds weird but hear me out, i want to replace my current adsl cable (rj11) and it's hard to find a store that sells that cable (already with the connectors or just the cable and i'll do the rest) around here, since i have a cat 5 cable around here (broke the connectors a while ago) i was wondering if i could use that instead or would i run into some kind of interference.
You can always use cat5/5e/6 cable with rj11 tips. If you're making a patch, you can even pull the two pairs you won't be using out of the sheath, but that can be a hassle. You won't get any sort of interference. I've used cat5 with rj11 and rj14 quite a few times. If you really want to be a nerd, you can double-tip four pair wire like cat5 and have two lines run in one ^_^

Don't worry about the frequency. All ethernet is baseband, which means it goes from zero [url= not technically zero, but low enough by comparison to not be worth quibbling about the varying starting points for different standards][/url]up to a certain freq. You'll have no problems, and the greater copper quality in good cat5 will, if anything, give you better signal. Just make sure you crimp properly.

EDIT: I'll point out that if you're going to buy a crimper, you should get one that does 11, 14, 25, and 45/48. And if your spare wire is STP instead of UTP, be aware of the tips you buy :P

EDIT 2: Here's a link to the pinouts for your 11, just in case you don't have them somewhere handy already.
Post edited January 28, 2016 by OneFiercePuppy
Posted January 28, 2016
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sunshinecorp: Best use of a cat5:

http://geekologie.com/2011/05/kinky-computing-ethernet-cable-fetish-wh.php
Amazing! That is really a "Cat o' nine tails" :-D
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Cyraxpt: Lol, kind of, i don't want to order 50m of rj11 cable from the mainland. :)
Mainland?! I was going to say I had some short spare cables lying around somewhere. But it seems it would not be as easy as I initially thought.
Posted January 28, 2016
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OneFiercePuppy: If you're making a patch, you can even pull the two pairs you won't be using out of the sheath, but that can be a hassle.
Hell nah, i used to do that and it was a pain in the ass, never again, i'll leave it be.
You won't get any sort of interference. I've used cat5 with rj11 and rj14 quite a few times. If you really want to be a nerd, you can double-tip four pair wire like cat5 and have two lines run in one ^_^
Nice, i was actually going to drive to a place where i haven't checked yet so now i'll wait for the tools to arrive and go with the cat 5. As for your sugestion, a bit overkill no? :p
Don't worry about the frequency. All ethernet is baseband, which means it goes from zero not technically zero, but low enough by comparison to not be worth quibbling about the varying starting points for different standards up to a certain freq. You'll have no problems, and the greater copper quality in good cat5 will, if anything, give you better signal. Just make sure you crimp properly.

EDIT:
EDIT 2:
Eh, to be honest i didn't spend too much money on the crimping tool since it's not a everyday work tool for me, just for ocasional stuff, so it only does 11 and 45, what i intended. And yes, even if has passed a long time since i work with those i still remember some of that stuff (wiring the correct pins). :)
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Gede: Mainland?! I was going to say I had some short spare cables lying around somewhere. But it seems it would not be as easy as I initially thought.
Madeira. :)

No need anyway, i actually prefer the cat 5 since it's more robust than the adsl one, obrigado.
Post edited January 28, 2016 by Cyraxpt
Posted January 28, 2016
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mechmouse: rtcvb32 is most likely correct about the other being used for ground.
I've noticed half the wires in most cables are grounds. The only exceptions i know of are the 9/25 pin serial cables where i think 1 pin was either dead (like used in VGA cords), are there to make the shape unique, or was a timing line. I don't know all the specifics though.
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General discussionRj11 connector on cat 5 cable?(22 posts)(22 posts)
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