Installing Ethernet cables

May 29, 2020 Last reply: 6 years ago 64 Replies

I was very lucky here. The previous occupants of teh house lived downstairs, and elderly mother lived upstairs (her daughter had mobility problems, and she didn't). She had the master phone socket fitted in her living room (previous large upstairs bedroom), and a cable was run to an extension downstairs.

This happened to be the room we chose as an office (the other large bedroom wasn't as convenient, and a bit smaller). The corner where the master socket was located was already chosen for the equipment rack. So the router is about 0.5 metres from the master socket.

True. But arguably it it isn't in such an electrically noisy environment.

Ethernet over powerline will do quite nicely unless you need really high speed or have other constraints that prevent it from working.

Bog standard cat-5 cable will do if you know what you are doing and don't want to use insanely high speeds over long distances. The faster you want to go the more exacting the curvature requirements are. You will need tooling to attach the fitting to the ends of any cables or alternatively oversized holes in the walls.

My advice would be to try internet over mains first. I do have both hardwired connections and powerline ethernet in my house. The hardwired ones are reserved for streaming video and large file transfers the rest can go on the mains. Amazingly ethernet over mains works for me across two different ringmains which I was surprised at. Speed is well down on the headline figure but still way faster than my 5Mbps ADSL 2+.

Its actually in a more electrically noisy environment outside the house with the traffic ignition noise etc. And it isnt electrical noise that determines the broadband speed anyway.

actually it largely is...all te other broadband users on the same cable run will produce more noise than the radio stations do in total

I'd not use mains plug internet adaptors, they create massive radio noise locally and with some appliances plugged in can be pretty poor at actually doing what they are supposed to. What about this new Mesh system I keep reading about? Is it any good?

Brian

But the cable is twisted pairs and its not radio stations, it the ignitions in the traffic that?s much worse than any electrical noise inside the house.

And the speed you get with broadband isnt determined by the noise level anyway, its determined by the length of the run of copper pairs in the street cable.

ok

probably not, what?

I had no intention of doing so

tim

That's the default solution

but ideally I'd like proper sockets on the wall instead

tim

my router is where it is, by the phone socket in the hallway

all visitors to my property get what they get

I think you can surmise I don't have too many visitors for which wifi connection is a big issue

unless you are very near, collecting it would cost more than buying new

thanks

tim

There's some truth, but it's oversimplified. The phone line is a twisted pair, which resists interference. The master socket splits out a bell wire (which isn't needed by most modern phones, but older ones need it). This means that the line is no longer balanced, you have three wires not two. If you use a plug-in extension, or follow the standard BT extension plan, you'll extend this unbalanced line which can pick up interference. Also a lot of "extension" cable you can buy in the DIY shops is poor quality - and extension cables are often flat with no twist.

The correct way to do things is fit a filter at the master socket - something like this

formatting link
if you've got a square NTE5A or this
formatting link
for the new NTE5C. Take a dedicated extension to the router, using only one pair and proper CW1308 copper (not CCA) cable. Take all the phones from the filtered terminals using a separate cable. The router lead does want to be as short as possible, as these usually aren't twisted, though if you can find a twisted-pair RJ11 lead the length shouldn't matter.

Done like this you should see no drop in speed. Theoretically there's some, due to the extra length and impedance discontinuity at the master socket, but it's tiny compared with the line itself. On the other hand, use a 20m tinsel-wire flat cable to extend your line, and you may well see a substantial drop in speed.

Mike

It being twisted will affect any noise it is subject to. It doesn't apopoly soleley to i=gnition noise.

Precisely. The longer the run the more pickup from adjacent cables and from radio stations.

As well as the weaker the wanted signal.

You seem to be rather weak on the theory of radio. I suggest you study the implications of near versus far field signals on twisted pair transmission lines, and the choice of ADSL bins versus the signal strength of the few remaining AM radio stations as well as the variation of recieved noise level with the time of day.

Then a short diversions into interference suppression on modern cars equipped with - yes - AM radios as well, still - should disabuses you of any notion that you actually know what you are talking about.

I'm hiding it in plastic trucking (having only recently decorated I'm not chasing walls and redecorating today)

it will look exactly the same, whatever is inside

it's only the flying ends that will look different

will they go round my 90 degree bends?

that not how pricing of sat cables works, least not last time I looked

being cheap is good, if it works

ok

so I need the tool to push the wires in

1" diameter , radius, something else?

thanks

tim

that's already been suggested elsewhere

but it isn't a no-mess solution, because they presumably need power

and (like most houses) I don't have power sockets at ceiling height

tim

I'd a void both CCS and CCA. Our telephone line is ali, highly unreliable, as the ali keeps fracturing in the IDC "jelly bean" conectors. Spark installed some CCS "CW1308" (interior telephone cable) from the master socket to router position, about 10 yards of cable. Using that made a dramatic reduction in ADSL rate. Fortunately I'd also specced a couple of (copper) Cat5e's as well, using one of them no problem.

It's very much easier to use a wireless extender (or ethernet over mains if you don't have any radio hams nearby). The main part of my house is quite long (about 60ft) with unusually dense concrete block walls. The router/WAP is about 1/3 from one end of the house and a wireless repeater is plugged-in to a socket on the landing about 1/3 from the other end. All WiFi devices work fine all-over the house.

We'll see...

But the reality is that there are 4 wires in it, two twisted pairs, so its still balanced.

< extension plan, you'll extend this unbalanced line

Nope, see above.

Nope.

He wasn?t talking about that, he was claiming that the line between the extension socket and the modem needs to be a short as possible and that is just plain wrong.

I was ONLY commenting on his claim that the cable between the extension socket and the modem needs to be as short as possible.

In fact you don?t if the cable between the extension socket and the modem isnt as short as possible either.

What I said.

In reality there isnt and trivial to avoid using tinsel cable of anything like that length too.

Never said it did, but ignition noise is in fact the major electrical noise outside the house.

It isnt pickup that?s the problem, it?s the loss in the cable.

Then you need to get your seems machinery seen to.

Been doing that since before you were even born thanks.

That?s not what determines the speed you get.

Ditto.

You never could bullshit your way out of a wet paper bag.

There's no signal on the fourth wire, so that pair is not balanced, if the third wire is carrying the bell signal. Disconnecting the bell wire made a substantial difference here. (Not that it matters now we have FTTC)

Certainly it can, which is why the universal recommendation has been to disconnect the bell wire - leaving the second TP entirely unused.

Best way is to have your router as close to the incoming cable as possible. Then run CAT5 from it to your computer.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required