All these people telling me I'm wrong, when they have no idea whatsoever what is connected inside that box. So far I have shown that none of them know
Here's a little question for you.
If it is connected to an otherwise unused terminal, what did it ever do? The answer seems to be here:
From the provided wiki link.
In the system of divided ringing, the ringing circuit was separated from the talking circuit by adding a ground connection between the central office and the subscriber stations for ringing. On the same subscriber line, one party used the tip side of the line and ground for ringing, whilst the other party on the same line used the ring wire and ground for ringing, to achieve full selectivity for two-party lines, in which only the selected station would ring
So it was and quite possibly still is connected. If you can tell from the initial photo what is connected to what, and what isn't, you are one very clever person indeed.
I suggest for a starter that there are two strands of twisted wires. A pair from the right disappears into the insulation on the left, and some others go down beside the white cable.
Nobody on this forum knows
what has been done inside or outside that connector box since it was (presumably) properly wired up some time ago. Many seem to be assuming that whatever disconnecting has been done has been carried out by a BT engineer, or a contractor, or a house wiring electrician, or a DIY job, and done correctly.
Of course none of those ever does a slapdash job. (In case of doubt about that list, I have never known a GPO/BT/Openreach engineer be slapdash. It's just a list of the possible disconnectors. I would be amazed if a "BT" one was involved in leaving the assembly looking like that).
The amassed wisdom is that there cannot possibly be any problem with that wire. It/they never rang external bells so people in the front or back garden could hear there was an incoming call?
I respectfully suggest those wires are connected to an in-use terminal inside that box. Where they go and how they end outside none of us know, though I largely accept this post:
The earth wire isn’t connected to your pair. You’d have a huge earth ‘hum’ over the dial tone ... and it would test faulty (which you’d hope might have been picked up at some point since the property was built)
I don't think however that rules out those wires being connected inside the box but disconnected and non-earthed somewhere in the building.
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