Thanks Zarjaz and RobertoS.
Glad to hear I had understood things and that a correctly fitted NTE5 and faceplate resolves 'star wiring'!


I don't think @RobertoS's earlier comment re impacted/clean installations is to be taken as a fact...

Read Zarjaz's post again.

How do you know that on any particular installation other than your own that there is no star wiring, even though an NTE5 is present? Do you even know for your own? Remember, this thread is not about your installation.

Depending on when and why, and by whom, an NTE5 was fitted to replace an older master, there is no guarantee at all that star wiring will have been sorted out. If it was done in the days of dialup, as many were, it didn't matter in the slightest.

You seem to be determined to think the VDSL2 faceplate fixes everything. It doesn't. If it did, at no stage would engineers ever have been needed to install FTTC.

In reply to a post by b4dger:

If a faceplate filter is in use* doesn't this split voice/data so 'star wiring' can't cause problems?

No! It doesn't.

Star wiring still impacts the line even when a faceplate filter is in place, and even if there is nothing attached to any extensions fed by star wiring. Plus, anything on star wiring still needs filters else you get chaos.

Edited by RobertoS (Wed 04-Nov-15 12:06:39)

In reply to a post by Zarjaz:

Star wiring is where the incoming line splits before any supposed NTE. If this has occurred a faceplate filter won't rectify the issue.

Star wiring can occur before or after the NTE. What else can you call it after the NTE?

Star wiring, where the incoming line splits before the NTE, is problematic and will cause issues that a faceplate filter cannot rectify .
Would be a better way to phrase it!

In this context it is normally taken to mean "before" the NTE5. You may be correct, but I have never seen that distinction made before on these forums or any other.

The most likely scenario after the NTE5 is daisy-chaining. Star wiring would require a junction box with multiple extensions fed from it. The most likely setup for that being star wiring "fixed" by feeding back from the NTE5 to the original junction box after that has been by-passed by the incoming line.

This is hard work...
You missed out my *note with your quote.

*And as I mentioned in the true master socket - correctly wired with no extensions bypassing the test socket.

I'm happy I've understood things correctly...

Have it your own way, for your connection. I forget what went on when that was installed, but the comment made by the engineer that you give above doesn't sound at all right. Maybe you can provide a link to a relevant thread.

I just hope that nobody needing to know what needs to be done to ensure as far as possible that their wiring will not cause their FTTC (or even ADSLx) to be impacted will take any notice of you.

I AM correct and there are many many installations with star wiring post NTE as well as combinations of daisy chaining and star.

In reply to a post by RobertoS:

Have it your own way, for your connection. I forget what went on when that was installed, but the comment made by the engineer that you give above doesn't sound at all right. Maybe you can provide a link to a relevant thread.

I just hope that nobody needing to know what needs to be done to ensure as far as possible that their wiring will not cause their FTTC (or even ADSLx) to be impacted will take any notice of you.

All I was trying to ascertain was that if a line enters a building, goes directly to a correctly wired NTE5 that's been fitted with a faceplate filter then any star wiring on the voice side of things can not have an effect on the DSL conection. i.e. All the voice wiring is on the filtered side of the faceplate filter so is safe however it is wired?

There is no particular link or thread for what the engineer said to me when he installed FTTC - it's just what he said! Incorrectly as we all know, as most people often slow down as DLM and crosstalk take hold. I have said previously that he was only a Kelly engineer - but this still counts as an ISP engineer install.

The effect of star or daisy chain extension wiring that is post faceplate filter should have no effect on the VDSL/ADSL signal picked up from the faceplate socket.

As is the norm for the internet we have discussion of the minute detail