Pilot has been extended.

500,000 passed now, increasing to 1m by the end of 2017.

FWIW these this is my line taken from DSLstats 600m from the cabinet. I know I'm 600m away because it was measured by a BTO engineer with his test equipment a few months ago:

Downstream Upstream
Line attenuation (dB): 15.1 6.1
Signal attenuation (dB): Not monitored
Connection speed (kbps): 40000 9999
SNR margin (dB): 3.8 6.7
Power (dBm): 13.8 7.4
Interleave depth: 16 0
INP: 47.00 0
G.INP: Enabled
Vectoring status: Unknown


EDIT: I was also told that in his well informed opinion that my line had aluminium in it somewhere, which he says is everywhere. That is the reason I couldn't get a sync above 40/10. There is an interesting general tale he told me about the high prevalence of aluminium that is in the loop, but that is another story.

Edited by TygerTyger2010 (Thu 17-Aug-17 14:13:48)

I know was a bit slow getting it up today, as sifting through code

Please can those of you who understand G.fast better than I do advise me.
I currently receive 45Mbps down on BT Infinity 1. I was told by a BT engineer that I wouldn't achieve better speeds than that on Infinity 2 or any FTTC service because when our 1960's housing development was built it was wired with cheap and readily available aluminium rather than copper wiring.
Will G.fast be available to homes like mine or does it rely on copper wiring all the way from Cabinet to Master Socket?

It won't be available to you while it's deployed from the cabinet as it's going to be for the next few years.

Having aluminium doesn't disqualify you from G.Fast, but it does mean you would need to have a line shorter than people supplied by copper.

A 45Mbps speed suggests you aren't likely to benefit from G.Fast from the cabinet, and will need a node to be installed closer to you.

But that's a guess. We (the public) don't really know yet.

I've found some recently-allocated charge codes that Openreach are using for unmetered electricity supplies for G.Fast:

1 line card: 124 watts
2 line cards: 173 watts
3 line cards: 221 watts
4 line cards: 267 watts

If these DSLAMs can only handle 48 ports in total, then that's 12 ports per card, and roughly 4 watts per port, and 75 watts on non-port tasks.

The code allocation doesn't mention the vendor of the DPU, but it suggests that only one is being rolled out at the moment.

ali can actually match or beat copper. For some reason there is an assumption on here that BT use good quality copper when its used but in various areas thats not the case.

In my area the copper is really thin, but the ali is about 2-3x the thickness.

my attainable is currently around 80mbit even tho the last 50m or so is ali.

Your most likely barrier to g.fast is line length rather than cable type, a copper line even with good copper wouldnt boost you from 45meg to the specs needed for good g.fast.

Whereas I would agree that a short to short-ish run of Aluminium of decent guage won't stop an 80/20 sync, what kind of total line length are you talking about here ?

I had a long and informative lecture from a friendly BT engineer including the fact that Aluminium is a big issue that they often had to deal with.

He himself wanted 80/20 and could only get 40/10 because of Aluminium in his home line.

I can get a pretty much optimum 40/10 sync with Aluminium present @ 600m . I can't get anything above that.

from the cabinet is about 370m

The issue with ali as I understand it is 2 issues.

1 - it corrodes on joints.
2 - compared to same thickness of copper it has higher attenuation, however not all copper matches the thickness of ali deployed, so e.g. 0.6mm ali should beat say 0.1mm copper.

Some more info on my current pair.

I had a recent fault at the cabinet, and there was short periods of time I had less crosstalk and my attainable increased as a result, it was at times over 100mbit. I dont know if this was with no crosstalk at all, but certainly less crosstalk
Before the fault however my attainable was less than 70 (6db snrm), interestingly after some discussions with openreach I know only the tie pair ordering got changed not the D side, so I heave learnt the tie pairs themselves can have a huge affect on crosstalk, and those are brand new copper.