I feel I should say again that I have not look inside a new VDSL faceplate yet so what I said is just an educated guess

I understood. I didn't read into it more than you intended.
But because we have finally established that plug-in extensions are in use, the topic about which the OP got so strangely irate about me trying to find out, I was just re-raising the issue in case you are right, as it seems to have been ignored.
However If I were going to use the I-Plate as a basis for a filter faceplate, then I would leave the ring line looped through via the filter choke as it is there already.
In the case of the OP's master, I fully understand that he has his extensions run from the faceplate phone socket, but he may be using a normal telephone wire with a bt plug crimpted on, and this would have a ring line in it. As the master socket is in the loft and therefore high up it would/may be more prone to RF interferance. If he has made his own connection with the ring line left out at the BT plug end then fine.
He does say it is Cat5, and given the location I suspect a DIY job. Therefore quite possibly the ring wire is not connected. It depends on whether its detrimental quality was known about by whoever did it, or whether they just followed the standard spec BT connections.
Certainly a normal filter faceplate would address any such problems and is worth a try.
Exactly. I also suspect he has an ADSL Nation one now unused.
Interesting to know from you and the others that the VDSL faceplate isn't anything basically different from the normal BT ADSL faceplate. Farce!
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