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Standard User PhilipD
(experienced) Wed 19-Feb-14 17:48:19
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Possible for both VDSL and Ethernet in same Cat5 cable?


[link to this post]
 
Hi

Wondering if this is okay.

I have a cat5 cable running from downstairs to upstairs.

I was thinking of taking the VDSL signal from downstairs to upstairs in 1 pair of the Cat5 cable, and then in the same Cat5 cable use 2 pairs (only 2 pairs are needed for 100Mbits Ethernet) to return back downstairs 100Meg Ethernet (from the router upstairs that has been fed the VDSL signal).

This would avoid running another cable which would be in close proximity anyway.

How would the two signals affect each other being in the same binder?

Regards

Phil
Standard User vit0
(member) Wed 19-Feb-14 19:11:54
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: PhilipD] [link to this post]
 
In reply to a post by PhilipD:
Hi

Wondering if this is okay.

I have a cat5 cable running from downstairs to upstairs.

I was thinking of taking the VDSL signal from downstairs to upstairs in 1 pair of the Cat5 cable, and then in the same Cat5 cable use 2 pairs (only 2 pairs are needed for 100Mbits Ethernet) to return back downstairs 100Meg Ethernet (from the router upstairs that has been fed the VDSL signal).

This would avoid running another cable which would be in close proximity anyway.

How would the two signals affect each other being in the same binder?

Regards

Phil


I've done something similar with ADSL in the past, never caused me problems. Give it a go and see smile

Lee
Standard User Ripley
(committed) Wed 19-Feb-14 19:58:47
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: vit0] [link to this post]
 
If it is standard CATv cable and not shielded then as you say its probably not much different to running the cable adjacent to each other.

Its not ideal, but there are other options...

1. have the modem and the router downstairs, then just have a little switch upstairs connected to ya existing CATv cable.

2. have just the modem downstairs and then the router upstairs, use the CATv for connecting the modem to the router, and then maybe get a powerline adapter to link upstairs to downstairs.

But I would just install another cable, its not rocket surgery its just being arsed to do it!

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Standard User Brookzy
(regular) Wed 19-Feb-14 21:42:48
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: PhilipD] [link to this post]
 
If you look at alternative methods, have you considered ethernet-over-coaxial?
Standard User commsguru
(learned) Wed 19-Feb-14 23:02:53
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: PhilipD] [link to this post]
 
why don't you just use a gigabit swith upstairs.
the gigabit switch will use all 8 wires.
I have about 4 gigabit switches serving my 6 bedroom house.
a fully gigabit wired network is the way to go. a gigabit network is as fast as standards hard drives go.

to do what you are thinking will probably lose some speed and causes errors.
I only combine cat5 cables when there is no other option.
Standard User PhilipD
(experienced) Sat 22-Feb-14 17:17:42
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: commsguru] [link to this post]
 
Hi

Thanks for all the replies.

Basically I was just trying to limit boxes being plugged in and avoiding unnecessary wires. I was thinking about a combined VDSL/Router with Wi-Fi and rather that sat downstairs, it would be better upstairs for Wi-Fi range and generally out of site, and the router can then connect to a printer and PC upstairs as well.

Downstairs I have an AV amp (wired only) and media box, plus a PVR, all wanting a network connection, so I would like to bring back downstairs an Ethernet connection into a small switch, the switch can then be hidden out the way, and can connect up the equipment downstairs.

So if I could run just one Ethernet cable from downstairs to upstairs, have it take the VDSL signal up to the router, then use the spare pairs to return a network connection, it would be tidier. I will of course need to do a bit of bespoke connecting with the soldering iron and breakout the pairs but I can do that no problem.

Once I get FTTC installed, (waiting for appointment) I'll try it out.

Regards

Phil
Standard User mr_mojo
(knowledge is power) Mon 24-Feb-14 14:07:16
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: PhilipD] [link to this post]
 
Apparently Ethernet uses a frequency around 31.25MHz, and VDSL2 tops off at 30MHz - though in reality, BT use profile 17a which ends at 17MHz ish.

So you should be fine, plenty of space.

If I were you though I'd probably use homeplugs instead. Probably will give you >100mbit/sec and saves the soldering iron coming out.
Standard User RobertoS
(sensei) Mon 24-Feb-14 14:18:45
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: mr_mojo] [link to this post]
 
Homeplugs would need to be 500Mbps ones if the VDSL connection is high speed.

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Standard User vit0
(member) Mon 24-Feb-14 16:30:33
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
Homeplugs would need to be 500Mbps ones if the VDSL connection is high speed.


Yeah definitely. I had 200Mbps rated ones which couldn't do more than 60Mbps on new electrical wiring! The 1 cable solution sounds the best to me:
Orange and Green pairs for 100Mbps ethernet connection
Brown or Blue pair for VDSL extension

Happy days

Lee
Standard User adslmax
(knowledge is power) Mon 24-Feb-14 17:51:12
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Re: Possible for both VDSL and Ethernet in same Cat5 cable?


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
Homeplugs would need to be 500Mbps ones if the VDSL connection is high speed.


Correct as I do have one of these 500Mbps homeplug and getting 73/18 on VDSL but I did try 200Mbps homeplug and only getting 58/18 on VDSL

plusnetFTTC72 Meg
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