ADSL extension

[Wordan]

We have an adsl extension running from the master socket using twisted Cat5 cable. It only uses 2 wires, is it possible for the remaining unconnected wires to introduce noise and is there a way to minimise them from doing so?  We're using a master socket face plate filter with 2 unfiltered terminals on the back for such an extension(ie, there are no plugs on the end of the cat5 cable... its wired into another socket so there is room for components if necessary).

[Wordan]

Will Ethernet and TV cables running near the adsl wires cause problems?

[JB]

Nah, twisted pair wires such as Cat5 are hugely effective at rejecting any interference. :smile:

[Wordan]

So i could run a telephone extension down the same cat5 cable without the unpaired ringwire causing interference?

[JB]

If the extension socket is unfiltered can't you just plug a normal ADSL line filter unit into it, then you'd have a socket there for adsl and voice yeah?

[Wordan]

oh yea lol

edit: though it would be cheaper if I could just use the spare wires in the Cat5 cable if it didn't cause problems

[Carr0t]

Shouldn't do. After all, they run them down the *same* wires to get the ADSL signal to your house. Plus 10 and 100 meg only use 4 wires of the cat5, so it's entirely possibly to use splitters at each end of the line to give yourself 2 100 meg connections over the one wire (we use that setup a lot at work where we're short of datapoints in offices, as a temporary thing). I've never seen that have any interference issues.

[Wordan]

When they come to your house there are two paired wires. A third wire is added for the ringer at your master socket, so that makes one unpared wire running around your house. I have read it can pick up intererence easily. I'm wondering if an unpared wire is more likely to cause inteference in other wires next to it.

[JB]

Are you trying to get a voice socket in the same place as the broadband without the 'interference' effecting your broadband?  Suck it and see really, myself I'd say it would make adsolutely no difference to your broadband.

[Wordan]

yep, thanks I'll have to try it out