Using telephone disconnects broadband connection.

RedTen

RedTen

RedTen

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23 Jun 2007
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552
Location
South East
Hello!

Very frustrating issue with my BT extension sockets. If using the two extensions rather than the master I get disconnected as soon as the phone line is enabled.

So my router > filter > extension socket. Pick up phone and press to start call.. as soon as the dial tone is heard my broadband connection drops.

If the router is connected via master with a filter it is fine. I've tested using a constant ping and it's perfect.

How do I go about fixing the extensions without having to fully re wire if possible? :confused::( Could I potentially remove the faceplate and check/fix?

I'm trying to avoid having someone come out and re wire or use a super long RJ11.

Thanks in advance.
 
Yep I have a filter on any line that uses a phone.

The internet works fine through the socket..until the phone is used.

Kitchen:

Standard looking box like this with a filter attached. This is an extension off the main at the front of the house.

SPwiKlK.png


Bedroom:

A cable runs down from the loft which I assume is again another extension off the main with a small box that looks similar to this. It also has a filter attached before the router is connected.

a3PevX1.png
 
Just to note: We are using DECT wireless phones. The base is plugged in to the socket in the kitchen and we have two handsets. I'll try using a wired phone later to see if that is causing any interference.
 
If the extensions are filtered correctly then it is possible you have a wiring fault in the extensions that is dramatically increasing attenuation and line noise when a call is in progress, but somehow doesn't have an effect when the line is idle. I believe the electrical characteristics of an idle line and an in use line are quite different.

Do those extensions have the ring wire attached? You should only have two wires attached to any extension line box, 2 and 5.

What happens if you call your number but not answer? Does the broadband drop or struggle at that time?

What is the call quality like on the master socket compared with the extensions (best to use a wired phone for this)? What happens if you use a wired phone for the extensions, does it still drop?
 
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Tealc said:
If the extensions are filtered correctly then it is possible you have a wiring fault in the extensions that is dramatically increasing attenuation and line noise when a call is in progress, but somehow doesn't have an effect when the line is idle. The electrical characteristics of an idle line and an in use line are quite different.

Do those extensions have the ring wire attached? You should only have two wires attached to any extension line box, 2 and 5.

What happens if you call your number but not answer? Does the broadband drop or struggle at that time?
Click to expand...

I'll check the wiring when I get home later - thank you.

The connection drops as soon as you hear the dial tone. I don't even have to place a call from the landline for it to disconnect.
 
Swap the filters around, you might have a broken one on your phone.

Your modem doesn't actually need a filter, it's just a convenient way to convert the BT type socket into the RJ11 that the modem cable has on the end.
 
just a thought but I take it your master is not the new type with a filter built in which means you dont need filters at your extensions ?
 
Start with the basics, disconnect all your house phones.

Connect the BB up with a filter
Ring your house phone from your mobile (with no phones connected)

See if it messes up the BB.

Now add one phone at a time with a filter on each one, testing the line in the same way.


Some microfilters break pretty easily. Swap them around until you find the culprit.
 
Can you guys just confirm the wiring on these sockets looks OK?

How come the smaller socket has 4 wires and the other just have two?

Imgur gallery HERE.

I think I may have fixed it by fiddling with the faceplates - could a loose wire have that sort of effect?

Yesterday just by engaging the wireless DECT phone and hearing the tone would break my ping to google.com.

I'll continue to monitor it I guess. :o
 
You can disconnect the middle two wires on the first image. A pair in 3 and 4 is not required.

Otherwise it looks ok, assuming that both extensions on your master actually go to your extensions cleanly.

Edit: actually scratch that. It's wired wrong. You should have 1 wire out of each pair going to 2 and the other to 5, not the way it is wired at the moment. A pair is blue/white white/blue or org/wht wht/org.

At the moment you are using separate leads for your signals which must be really attenûating the signal as it'll have no noise suppression at all. No wonder your broadband doesn't like it much.
 
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If it still cuts out, try add an ADSL filter after that long extension wire as it might not be filtered correctly behind it.
 
That wiring is terrible.

The master socket has two extensions connected. Presumably the cable connected using white/blue and white/orange goes to the MK socket? It's splitting a pair, and is also wired in reverse (not that that actually matters), but it should work.

That leaves the extension using blue/white and orange/white going to the other socket. Again it's splitting a pair, but it also appears to be connected to 2 & 3 rather than 2 & 5. Does it work with a phone at all?

And some muppet has stripped the ends from the wires at the master socket before pushing them into the IDC.
 
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What you'll need to do is remove those extensions from the master. Then remove the wires you have and strip back 40mm or so. Take the blue/white and wire into 2 and white/blue and wire into 5. At the extensions end repeat the process, you'll need to remove the 4 wires from the small extension and rewire. Blue/white to the left contact and White/Blue to the right contact as shown in the image. The centre two contacts are not required.

Inside a twisted pair cable like the CW1308 you have in use there you will find that each pair twists along the length of the cable at different pitches and it is this that supresses the noise and crosstalk. With your wiring not using pairs twisted at the same frequency the wires will pick up noise from the surrounding area and each other and probably have out of phase issues too as one length of wire will be a slightly different length than the other. It undoubtedly works with voice but the high frequencies of ADSL are stopped in their tracks. This wiring is even worse than using flat extension cables.

It is a surprise that the phone even works off 2 and 3. Maybe it has a connection for the ringing circuit or something.
 
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That's what happens when an electrician does telephones.

It's very similar to what happens when an electrician does RF or data networking.
 
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