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4 posts

Wannabe Geek


Topic # 108351 28-Aug-2012 23:20 Send private message

Hi there, today I went to open up my phone jacks to see if I could find what was affecting my DSL speeds, and when I opened up the (I'm assuming) master jack, I could see that 6 wires were connected, but couldn't see into the jack properly and I pulled the faceplate and 4 wires popped out of their slots.

Now I don't know where each one was connected. It has also disconnected my internet (using a tethered phone at the moment). There are still 2 wires connected, a red one which is in slot 2, and a white one in slot 5.

There is two cables leading into the jack, one has red, blue and white, wire coming in (the red and white ones are the ones that are still connected.

The other cable has white, black and orange wires coming in (none of which are connected). There is also a white wire, and a yellow wire coming through which aren't 'bundled' like the other cables.

I've been searching the internet for diagrams of some sort to show which wires go where, but can't seem to find one that matches mine.

Any idea of which wires go where? Any help would be greatly appreciated.

Also, the jack is a Telecom jack, and has a '2' on the corner of the faceplate.

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  Reply # 678513 28-Aug-2012 23:39 Send private message

plasticshadow: There are still 2 wires connected, a red one which is in slot 2, and a white one in slot 5.

2 and 5 are the only BT plug pins that are used in a 2-wire jack.  But they connect all the slots together on each side so it doesn't matter where you connect the wires.  1,2,3 are connected together and 4,5,6 are also connected together.

plasticshadow: The other cable has white, black and orange wires coming in (none of which are connected). There is also a white wire, and a yellow wire coming through which aren't 'bundled' like the other cables.

Two of these wires will be the incoming line (from the exchange or roadside cabinet), and the other two probably go elsewhere in your house.  If you have a multimeter, it will be easy to find which wires are the incoming line.  You should be able to measure 48 Volts DC between them.

If one of the cables has a thick black sheath, this is probably the incoming line.  Without a multimeter, you will just have to experiment until you find the pair that produce a dial tone in the phone plugged into the socket.  Then it will be a matter of experimenting until you find which other wires connect to any other jacks in your house, either by using a multimeter, or a phone plugged into those other jacks.

plasticshadow: Also, the jack is a Telecom jack, and has a '2' on the corner of the faceplate.

This means it is a "2 wire" jack with two lots of joined together connections as I described above.







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Wannabe Geek


  Reply # 678522 29-Aug-2012 00:02 Send private message

Thanks for the response! I've connected the black wire that does not seem to be connected to the cables mentioned earlier, to connector 1, and my modem started attempting to sync with the line, but can't.

I plugged in the other seemingly non-cable wire to connector 6 and it's the same (syncing attempts, but no success).

I can't check for a dial tone as I'm on Naked DSL, and also don't have a multimeter.

Would pics help at all?

Thanks for the help.

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  Reply # 678529 29-Aug-2012 00:24 Send private message

plasticshadow: I can't check for a dial tone as I'm on Naked DSL, and also don't have a multimeter.

Oh ... Naked DSL makes things much more difficult as there is no DC voltage on the line.  Using a phone plugged in, you may hear a slight hissing from the DSL, but it depends on the phone.

plasticshadow: Would pics help at all?

Not really because every house is wired differently, according to the cable types and colours in use.  Red/White are the most common colours used for a 2-wire system internal wiring.

Often, the incoming line is Black/Yellow, but not always.  Also, the wires for the incoming line sometimes have thicker insulation than the others, but again, not always.  It will just be a matter of experimenting until you find the two wires that work.  There aren't too many possibilities, but it could take a while.

Good Luck!







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Wannabe Geek


  Reply # 678533 29-Aug-2012 00:35 Send private message

Awesome, thanks to your help (and a bit of luck) I managed to get it up and running! Thanks a lot!

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  Reply # 678535 29-Aug-2012 00:43 Send private message

So what did you do to fix it?

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  Reply # 678536 29-Aug-2012 00:44 Send private message

Great to hear that you're up and running again. I've messed around with the phone wiring in various houses over the years, and learnt quite a bit here on Geekzone from people like Cyril7 and SBiddle, so just passing on the relevant knowledge that I have.







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Wannabe Geek


  Reply # 686027 14-Sep-2012 14:06 Send private message

networkn: So what did you do to fix it?


Hey there, I tried out the black and yellow wires and that done the trick.
The red and white wires are leading to other jacks in the house.

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