Ah! I understand now...

You mean remove the internal wires from the lower half of the plate but still plug the plate in.

Will give it a go! Though haven't got a crimping tool to put them back again if something goes wrong...

It shouldn't be a crimping tool. It's a Krone/IDC tool, under a couple of quid online or from shops lke Maplin. Even B & Q.

Just be careful you gently ease the wires off the faceplate in the first place. Don't cut them else you'll end up in a right mess.

But!

How many working extensions have you got? They may be daisy-chained and you could lose all of them .

There are probably about 6 or 7 extentions around the house - it doesn't matter if they don't work: we literally never use the landline. Only issue could be with sky boxes but if they ever need reconnecting (only scenario I can think of is if a PIN needs resetting or something) I'll get one of those tools from Maplin

I know nothing about using Sky boxes, but could it be taken to the master socket to do that?

Theoretically, yes. Practically, no. There's loads of cables and there's no TV by the master socket.

Now embarking on my trial-and-error interference-tracking...

After some poking around, the Sky box is definitely the source of the interference. I removed the cable (and turned off the box to be sure) and the speed reduction was about 80% less than it was before. So still a slight reduction but not bad!

Thanks for the advice, guys. This is a great forum full of knowledgable and friendly people!

Now, let's hope an Openreach guy turns up on Tuesday...

At the socket for the Sky box, try Sky box >> dangly filter >> phone socket of 2nd dangly >> phone socket. That is often sufficient to sort the problem.

Edit - I just had another look at your diagram from earlier. A second dangly into the splitter, with the Sky box into that comes to the same thing .

Second edit - Important. That extension for the Sky box almost certainly contains a bell wire that is not getting filtered!!! See the last two paragraphs of this page. The FTTC VDSL2 plate I believe filters that.

Edited by RobertoS (Sun 09-Feb-14 13:48:49)

In reply to a post by Brookzy:

There are probably about 6 or 7 extentions around the house - it doesn't matter if they don't work: we literally never use the landline. Only issue could be with sky boxes but if they ever need reconnecting (only scenario I can think of is if a PIN needs resetting or something) I'll get one of those tools from Maplin

If you have Sky multiroom - ie extra Sky boxes receiving all the channels from your main subscription at a reduced subscription of £10.25/additional box, then, unless all boxes are connected to the internet, all boxes have to be connected to the same phoneline. Otherwise you will be charged the full Sky subscription for every box.

I think the easiest thing will be just be to disconnect all the phone line extensions. Only use our phone line for internet and it's just not worth the hassle.

At the moment, master socket has wires only in pins 2 and 5 of the lower removable face-plate. So can I just disconnect these to disconnect all the extensions? Or will that stop the master socket working as well?

Thanks for the advice, but we don't have Sky Multiroom