Help needed re-wiring a BT junction box

[cajar]

just trying all combinations is going to take a very long time, you need to think about what you're doing, no disrespect.

I can say for an almost fact that one line will be on wh/or and the other one on gr/bl, and if you have only 2 internal wires and two sockets it should be straightforward to work out using a logical process. (especially when you know the pair used is blue and orange on the internal.

you might be making a simple error that a trained eye can spot, but with just your interpretation of what's going on it's actually quite difficult to help.

try this. from the dropwire, put orange1 white2, green3,black4.

now on the other side of the bt78, put orange1 and blue2. note which socket now works, and which line it is on it. tells us and we can help you from there.

 

[Ratbiter]

okay tried that, top row 1-4 as suggested, bottom row using just the wires from 1st installed line I used blue to bottom 1 and orange to bottom 2 this gave me a dialtone and the discontinued line (identified by 1471 and got message "there are no messages for you" and tried to dial another phone it says "the number you entered has not been recognised"

repeated with the 2nd installed line and got the same results dialtone and discontinued line.

removed all wires from the bottom and tried the 2nd installed line using the black to bottom 3 and green to bottom 4 got nothing no dialtone or anything reversed the green and black wires still nothing, same with the 1st line same process same result nothing.

using 1st installed line tried blue to bottom 1 and orange to bottom 3 this gave me the double line connection, dialled 1471 and got message as above and another message playing at the same time saying last call was recieved yesterday at etc etc.

awaiting your next instruction

 

[cajar]

so we now know orange white is the stopped line.

take the orange white from the dropwire and push it aside, we will not require this.

put green black in top 1 and 2 respectively. and put both blues from the internal wires into bottom 1 and both oranges from the internal wire (NOT THE ORANGE FROM THE DROPWIRE which is what I suspect you did before lol) onto bottom 2.

you should now have the working line present on both sockets

 

[Ratbiter]

thanks for helping, but done as instructed and there is no dialtone on either line. You seemed so sure I'm wondering if there is a fault on the dropline possibly the Black as nothing works if that is added to any combination.

 

[cajar]

possibly, though it would be a coincidence it develops a fault the same time you started tidying up the bt78. there's a possibility you have broken the green black pair in the neck of the cable.

take hold of each wire individually between finger and thumb and very gently pull as if you were slowly pulling a thread out of a garment, if either one comes away just strip the cable back and reterminate.

if not, there isn't much more you can do without testing equipment.

 

[Ratbiter]

Well that's a job for tomorrow. fingers crossed

 

[kbdiy]

Connect incoming orange to internal orange, incoming white to blue.
Internal cable blue to 2 of line jack, orange to 5.

NO . that would not be a twisted pair and hence noise levels could be much higher.

YES. Those colours are the old 4 wire internal and I can assure you that blue/orange ARE the pair.

 

[steve1976]

just a thought but will I need to connect the discontinued line to make the 2nd line connect. as I've removed the wires from the first line completely

If you connect the white wire to 2in the socket try each other wire one at a time in 5 till you get dial tone then ring 17070 and it will tell you what number you are calling from

 

[Ratbiter]

Still can't get the phone to work, (phone works on Virgin line fine) But with the drop wires along the top row as follows, white in 2, Green in 3, Orange in 5 and black in 6. and the orange and blue from both lines 1st line blue to 2 and orange to 5 and the 2nd lines blue to 3 and orange to 6.

I'm getting the best results so far 1st line I get dialtone and it is the discontinued line (as it should be) and no dialtone on line 2 BUT the broadband is now working fine from this line.

So half way there

 

[cajar]

Your line on the green black is one leg disconnected. I would inspect that pair for damage, failing that, you'll have to call Bt.

 

[renusgo56]

I think so, maybe you are forced to call and seek help

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etui sony xperia m2 etui xperia m2

 

[bernardgreen]

YES. If the internal cable is the 'new' 2502 type that Openreach use.

If it is 2502F then it must be a fairly recent install. So why is the OP altering it. ?

 

[cajar]

from what I can gather, he had 2 lines initially, and since one of them was discontinued, decided he wanted the remaining line on both sockets.

 

[Ratbiter]

from what I can gather, he had 2 lines initially, and since one of them was discontinued, decided he wanted the remaining line on both sockets.

Close the 2nd line socket was in a better position for using the modem as it gave a better wi-fi to other areas of the house. (a large 4 floored house with solid brick walls) Didn't know until I started this post I could arrange it so they both worked on the same line.