SOGEA VDSL without using a filter

[iniltous]

Arguably the insertion loss refers to the voice frequency (0.3-3.4Khz ) the  band pass filter is designed to allow, as stated the idea is to disallow  ADSL/VDSL frequencies onto the voice path , so you may find your noise margins are unaffected by removing the filter on the ‘data’ side  , but obviously it’s going to be fairly simple to check once you have removed the filter from your line.

[licquorice]

[Colin_London]

There is a bit more inside a VDSL filter than that!

[licquorice]

No there isn't, and in any case the broadband signal doesn't pass through it, the voice signal does.

[pippincp]

@Colin_London  you'd be wrong. @licquorice  is quite correct. Also there is no difference between an ADSL, VDSL or G.Fast filter. They all do the same thing.

[Colin_London]

They do the same thing, but the design has changed. Why do you think the faceplate went through different versions? The latest faceplate has a REIN filter in it as well which isn’t shown on the little sketch above.

[Colin_London]

So for the doubters - removing the filter, replacing with a standard faceplate and putting the BT<>RJ11 cable in place has given me an extra 0.5dB as predicted, and an extra 3Mbps overhead on my maximum data rate. This is even before the POTS service has been removed from the line.

Also took the faceplate apart (don't worry, not Openreach property I bought it online). It has:

4 x induction coils

8 x Surface Mount Capacitors

2 Electrolytic Caps

REIN filter

Surge Arrestor

6 resistors

So quite a bit more than that sketch......