I was slightly confusing there.

I had a TDR at my workplace, using it for maintaining and extending the internal network amongst many other things; and it was not used on my home phone line.

Using it with an oscilloscope, I could demonstrate the In-Phase Reflections from an Open Circuit; and the Out-of-Phase Reflections from a Short Circuit.

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The Phone Line length came from -

https://windows.mouselike.org/be/index.asp?DoAction=...

Since upgrading to VDSL and the inclusion of the FTTC Filter-Link, that no longer works on my line.

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I would advise you NOT to use your TDR on your BT/OR Phone Line.

Thanks, that's a intresting link, just used the Postcode to PCP & it is spot on with my cabinet location & distance is nearly the same as when I used my surveyors wheel to check distance to cabinet.
A good way for peeps to find their cabinet & it's number.

P:S: Just check another cabinet other end of village & it's spot on for cabinet location, & it also tells me it's under review.

Edited by Nightglow (Tue 26-Jan-16 19:19:36)

Revelations - that is a Revolutionary way to get the distance, certainly contrasts with Reflections on a TDR!

So what was the speed when you first connected?

Getting hold of the line statistics from the modem would be the next step - particularly the attenuation. Alongside @lee111s request for the estimates, of course.

It's always been like this in response to the question about the availability checker:

FTTC Range A (Clean) 80 74 20 20 -- Available
FTTC Range B (Impacted) 80 70.4 20 19 -- Available


The connection speed when we first went live was about 53/18.

Edited by nstrudwick (Wed 27-Jan-16 09:39:21)

It's possible you have a section of aluminium cable between the cabinet and your home which would certainly explain why your speeds are lower than expected for the line length.

In reply to a post by lee111s:

It's possible you have a section of aluminium cable between the cabinet and your home which would certainly explain why your speeds are lower than expected for the line length.

I had almost identical problem with speed, qouted 66Mb to 80Mb, got around 20Mb,sometimes a bit lower, the cable was a mishmash of aluminum & thin copper,bad joints, took a lot of complaining before they finally replaced it, now on 72Mb.

Edited by Nightglow (Wed 27-Jan-16 09:55:30)

In reply to a post by WWWombat:

So what was the speed when you first connected?

Getting hold of the line statistics from the modem would be the next step - particularly the attenuation. Alongside @lee111s request for the estimates, of course.

That has been asked about four times! and ignored.

In reply to a post by lee111s:

It's possible you have a section of aluminium cable between the cabinet and your home which would certainly explain why your speeds are lower than expected for the line length.

That is certainly one explanation. Other valid ones exist too - including lines that aren't routed in the direction the subscriber believes, or that their line "trombones" further away from the cab, before returning. Or lines of a reduced gauge.

The data that will allow for the best comparison is the attenuation values (single and/or per-band), which will be part of the line statistics.

I've been complaining for nearly a year now and still no action on the aluminium cable.A few more have switched to fibre in my road and they are just accepting that they will only get 30-40 Mbps when there should be no problem getting significantly higher speeds if the aluminium was replaced.

All that happens is the estimates on the checker get reduced.