Agreed

I was simply trying to convey that the supposedly BB "Modem" side of of any such filter still has both the BB signals and the (voice) Phone signals present, whilst it is the Phone side that, subject to the performance of the filter, has Phone signals only.

I was not suggesting that he should normally use an unfiltered phone, such as would happen if a simple Phone Splitter was used.

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After I had ordered an upgrade to VDSL in May 2014, whilst waiting for it to take place, I initially intended to replace the higgledy-piggledy wiring that had "grown" over the years from "Dial-up" days, to my Modem/router location, with a proper cable; but decided to leave it until I saw the performance with the upgraded VDSL.

The upgrade took place on 4th June 2014; and I actually watched the technician carrying it out at "my" PCP.

Swapped from the ADSL Router/modem to the recently delivered VDSL version, EE Bright Box 2.

On a 40/10 contract, I have been getting around 36 Mbps, with a Downstream Attenuation of -15.3 dbs, over about 300 Metres from the FTTC via the PCP etc.

More recently, on 16th November 2015, I installed a new, proper cable from the ancient, simple, NTE to the Bright Box 2, 10 Metres, following basically the same run within the house; but slightly more tidily, probably resulting in about 1 Metre longer, than the original "Mare's nest".

As it is a simple NTE, no Test Socket or Filter/removable faceplate, I simply inserted a labelled "VDSL" Filter/Splitter directly in the NTE, the new cable going in to its straight-through "VDSL" socket, whilst the original phone/modem general wiring went into the filtered "Phone" socket.

But I also left all the other ADSL Splitters/Dongles at each of the various phone connections throughout the house, so the working phones are all now "double-filtered", whilst I can revert easily to the original wiring for the modem, if I ever consider it necessary.

Although the Downstream Attenuation improved slightly from -15.3 to -13.5 dbs, the Downstream speed decreased slightly to about 35.5 Mbps, whilst the Upstream improved very slightly from typically 0.9 Mbps to 1.0 Mbps.

On Friday, 27th November 2015, immediately before installing a "Smart" TV, I checked the speeds again without any changes to the "new" wiring etc. (The Smart TV connects by WiFi.)

Downstream had improved to about 37 Mbps typically, Upstream remained around 1.0 Mbps; and there was a slight improvement in the Downstream Attenuation, from -13.5 to -13.4 Mbps

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On the WiFi side, I have 300 Mbps available on the 2.5 GHz band; and another 800 Mbps on the 5 GHz band, using ACRYLIC ( and previously inSSIDer 2) to monitor those.

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Thanks