"ADSL Box" = Socket with filtered faceplate?

In reply to a post by scottie4642:

There is an long lead from this box to the Router and the Router is connected by cable to the PC.

Better to shorten the modem lead from the socket and lengthen the Ethernet cable to the PC.

Removing the Ring Wire

Is upstairs phone filtered?

In reply to a post by scottie4642:

Have an ADSL box on the line coming into the house...
...There is a phone plugged onto the box with an extension to an upstairs phone.

Is the extension wired to the inside of the "ADSL box" (i.e. to the back of a NTE5 filtered faceplate) ?

The extension is plugged into the socket for rthe Router Cable which is the other socket on the box.

In reply to a post by scottie4642:

There is a phone plugged onto the box with an extension to an upstairs phone.

In reply to a post by scottie4642:

The extension is plugged into the socket for rthe Router Cable which is the other socket on the box.

Does that mean that you have 2 phones connected, via a splitter, to the front of the box: i.e. a phone downstairs and another phone upstairs on the extension?

In reply to a post by scottie4642:

The extension is plugged into the socket for rthe Router Cable which is the other socket on the box.

OK, I dunno what you are trying to say there, but if you can just try this.

Turn off router. Unplug all the wires (all wires, including phone). Then just plug in the cable from the router to the faceplate. So you have:

|router|<------>|faceplate|

Turn the router on. Wait 2 minutes.

Then test for 30/40 minutes.

Nick

In reply to a post by scottie4642:

The extension is plugged into the socket for rthe Router Cable which is the other socket on the box.

Not clear!

Are you trying to say that the router cable is plugged into the ADSL socket of the filtered faceplate and the extension to the upstairs phone is plugged into its Phone socket?

Remove the phone extension from it and retest.

That is exactly the situation.
The "phone socket" has a 2 socket part plugged into it. 1 of the sockets is for my phone downstairs and the other goes to the phone beside my PC, upstairs.
Does this complicate matters?

If this is the answer then I would need to just stop using the phone, permanently.
Seems a bit of a palaver to me.

it's called diagnostics. You make a change and see what effect it has. From that we learn. Otherwise you're wasting everyone's time.

so the master socket has two different sized sockets on it ? or two sockets the same type ? A photo might save some of the guesswork.