1 cat 5e cable. Need a phone and data point

Forums › LAN (ethernet/Wifi/routers/Bluetooth) › 1 cat 5e cable. Need a phone and data point

meehan

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#77271 13-Feb-2011 21:38

Hi,

Bit of help would be appreciated. I've got a wee problem - I've ran 1 cat 5e cable to an outlet, however, I need a phone and data outlet. Obviously a phone only requires one pair. I've heard for 10/100 it only requires 2 pairs? Is this correct, and if so, which pairs?

Thanks alot

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#439000 13-Feb-2011 21:47

You want two of these:

One goes at your jackpoint end and the other goes at your patch panel end. You can only run maximum 100baseTX on this though.

They are available here:
http://www.ascent.co.nz/productspecification.aspx?ItemID=381043

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BlakJak

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#439008 13-Feb-2011 21:54

Zeon beat me to it.

You can get Data/Data, Data/Voice and Voice/Voice splitters depending on your needs. If you only need 100Mbit they're fine. Seen them used dozens of times, though obviously running the right number of cables for your needs is the longer term fix. (In my old job we had a term called 'Temporary Permanent' which these splitters often became...)

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meehan

6 posts

Wannabe Geek

#439014 13-Feb-2011 21:58

Thanks for your reply. Is it possible to do it manually though? i.e. use the blue & white pair for the phone on one RJ45 or BT jack, and 2 other pairs on a seperate RJ45 for the data outlet. I want to avoid using one of data spliters as it's at a customers house and it would look like a cock up (which it is). Thanks

BlakJak

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#439022 13-Feb-2011 22:08

If your customer expects to run GigE then there's no easy fix.
If not, then you can identify the pairs required for Ethernet and punch the unused ones into a second outlet at each end (1 pair only required for voice).

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dolsen

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#439023 13-Feb-2011 22:10

meehan: Thanks for your reply. Is it possible to do it manually though? i.e. use the blue & white pair for the phone on one RJ45 or BT jack, and 2 other pairs on a seperate RJ45 for the data outlet. I want to avoid using one of data spliters as it's at a customers house and it would look like a cock up (which it is). Thanks

Yes, you can. I've done this (actually, two phone lines and a network port). Works fine, but, it's not a good way to do it. Much better using the splitter shown above.

sbiddle

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#439024 13-Feb-2011 22:11

Use splitters.

Hard wiring will only mean that in future if the requirements change (ie passive PoE or Gigabit) won't work. Somebody will end up having to spend time looking how the patch panel is wired to see what you've done.

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meehan

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#439038 13-Feb-2011 23:05

Thanks, I think i'll grab a couple of those splitters. Out of curiousity, which pairs does the data use?

foremannz

34 posts

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#439041 13-Feb-2011 23:26

Typical data uses 1,2,3 and 6 - voice uses 4 and 5
Should be pretty easy to google, hell even wiki might have it, but the splitters are definately the way to go.

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raytaylor

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#439049 14-Feb-2011 00:10

Data is Green and Orange pairs
Voice is blue pairs
and Power over Ethernet is blue and Brown

Its easy if you use the wall faceplates from jaycar that allow you to swap the plugs by inserting the right one into the holes, so you can have an RJ45 network plug down the bottom with the orange and green pairs, and then the blue pair can go to a BT or RJ11 plug up the top.

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illicit

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#439089 14-Feb-2011 08:57

meehan: Thanks for your reply. Is it possible to do it manually though? i.e. use the blue & white pair for the phone on one RJ45 or BT jack, and 2 other pairs on a seperate RJ45 for the data outlet. I want to avoid using one of data spliters as it's at a customers house and it would look like a cock up (which it is). Thanks

Not intending to be a smart a*se, just out of curiosity; Why are you doing this sort of work if you don't know much about it?

sbiddle

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#439116 14-Feb-2011 09:47

raytaylor: Data is Green and Orange pairs
Voice is blue pairs
and Power over Ethernet is blue and Brown

Its easy if you use the wall faceplates from jaycar that allow you to swap the plugs by inserting the right one into the holes, so you can have an RJ45 network plug down the bottom with the orange and green pairs, and then the blue pair can go to a BT or RJ11 plug up the top.

This is a very bad idea IMHO. The expectation from your average person is that a RJ45 data jackpoint contains all 4 pairs wired to it. The only exception to this expectation would be a voice patch panel were only the blue and/or orange pairs would wired just for voice.

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cyril7

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#439141 14-Feb-2011 10:32

I agree, wiring of infrastructure structured cabling should be complete and full, use external splitters (as linked above) to configure that structured cabling to allow for multiple services rather than conceal it behind a faceplate.

This is a requirement of NZ/AS3080. By using external splitters, the setup is obvious to anyone who has to deal with the installation in future, and without specialist tools or knowledge can rejig the installation for other services.

Cyril

meehan

6 posts

Wannabe Geek

#439484 14-Feb-2011 21:37

Illicit, I'm a sparky. these days we are expected to carry out all the voice and data although we get zero training at tech. no other sparky i spoke was certain either, hence why i'm on this forum.

BlakJak

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#439529 14-Feb-2011 22:19

I know plenty of electrician-turned-electrician+data outfits out there.
If you're not being trained in the correct installation of data outlets, you won't be getting my business (as soon as I find out).

Even i've undergone training in dealing with both Fibre and Copper structural cabling - and it's not my core job. It does mean though, that I can usually pick up a lemon install.

I hope your employer knows what they're doing by having you guys doing work without appropriate training for it!

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meehan

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#439537 14-Feb-2011 22:30

so what is the "appropriate training" for domestic structured cabling?

At the end of the day I installed one cat 5 cable instead of 2. big deal.

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