Replacing old phone cable inside wall.

Hi, I've been looking at my old telephone wiring, to see if I can speed my internet up, I know it hasen't been changed for atleast 20 years

When I follow the cable coming from the poll it disappears through the wall, when I look inside theres an internal cable, not the same as the one outside, that reappers from the wall about 2 meters in from my front door.

So would anyone have any idea whats going on between the external and internal cable behind the wall?

I was thinking about trying to pull the external cable out from outside and rerouting it with some new cable for inside, would this be ok or is there something behind there that it needs.

Also the phone cable crosses right next to where the electrical cables are coming up from under the house, would this cause interference.

Thanks.

Somewhere there should be a junction box where the drop cable (cable from the pole) and the internal wiring join. Are you sure there is not one? They can be quite small.

BTW the wiring before the Master Socket is BTOR�s and you should not make alterations to it.

The joint could be in the loft.

Very true I had not thought of that.

The outside cable runs down the wall on the outside of my house and goes in beside my front door.

The joint between the cables must be inside the wall.

Inside the junction box I assume it would be a simple joint nothing else.

If so it should be simple to reroute the cable with a new junction box and cable for inside.

Is there any very high quailty cable and junction boxes you can recommend?

Im trying to improve my ADSL2+ connection, im getting about 3.7 mb down at the moment.

Edited by deleted (Sat 09-Jan-10 19:18:49)

In reply to a post by yamaha22:

The outside cable runs down the wall on the outside of my house and goes in beside my front door.

The joint between the cables must be inside the wall.

Would it be just a simple box with the cables joined inside.

Well between your first post and this one I am confused as to exactly what you are asking and also telling us about the cable routing. Notwithstanding that however is the vexed issue of the external cable not being your responsibility. You are only responsible for any internal wiring AFTER the main BT box. If you can be clearer as to what you are trying to achieve I am sure there are people that can advise you.

I cannot see how BT could possibly have placed a joint inside the cavity wall unless they were mates with the brickie

The only time I have seen this sort of thing is when the door and frame have been replaced. The door fitters chase out the wall and bury the joint box, and the fault was at this joint, so the easy way out was to replace the cable and start again.

The door and frame were replaced awhile ago, but the cable emerges from the skirting further in my house, maybe it could be under the floor.

Right lets start at the beginning. When the line was first installed, the external line terminated in a joint box no doubt screwed to the original door frame, and the internal wiring lead from it. When the new door was fitted (does it have a metal frame?) the helpful fitters have buired the lot, so now you cannot get to the box to check anything. I suggest you involve Openreach to rerun the external line.

In reply to a post by yamaha22:

The door and frame were replaced awhile ago, but the cable emerges from the skirting further in my house, maybe it could be under the floor.

That would be very helpful of the door installers!! I agree with SystemX - time to enrol the assistance of BT OpenReach

There is one problem here. As the door fitters buried the junction box, it will be a chargeable job. Sorry, order of £160.00 + VAT.

Can we try and look at this from another angle with a view to improving the BB signal.

Is it the first socket in the house that you used to connect the router to, or are there other phone sockets and is the router connected to one of those?

If this were my home I would cut the external cable, unclip it from the wall and run it into the loft where a joint could be made to new internal wiring and the master refitted where required.
The problem with door fitters/ double glazing installers is that sometimes they get clever and remove the joint box altogether they just twist the wires to form the joint and slap some plaster on top. This avoids buiring the box. The joint then corrodes and leads to line noise. No amount of rewiring or anything will improve BB performance untill this joint is delt with.

Assuming that is the problem.

I must council against touching BTOR's wiring. It is theirs and they do get upset if it is altered.

It has a wooden door frame.

Thats good. A metal frame can cut into the insulation of the cable. What are your line stats like?

ADSL Link Downstream Upstream

Connection Speed:

Down - 3715 kbps
Up - 939 kbps

Line Attenuation

Down - 50.5 db
Up - 25.5 db

Noise Margin

Down - 9.1 db
Up - 6.0 db

Yes I see your point, and understand why you want to check your wiring. You need to get the joint sorted at the front door

In reply to a post by yamaha22:

The outside cable runs down the wall on the outside of my house and goes in beside my front door.

The joint between the cables must be inside the wall.

Inside the junction box I assume it would be a simple joint nothing else.

If so it should be simple to reroute the cable with a new junction box and cable for inside.

Is there any very high quailty cable and junction boxes you can recommend?

Im trying to improve my ADSL2+ connection, im getting about 3.7 mb down at the moment.

I doubt whether it will make any difference at all. Recently BTO changed the cable from the pole to my house, and they also re-sited the master boxes (I have 2 ADSL lines). The old installation had the wire from the pole going up to the loft, where it was coiled in a loop, and joined to another cable which went to the master sockets. I thought that the replacement of this cable with another continuous one which was half the length would make a big difference, but it made no difference at all.