I link to the source in my original quote.

In reply to a post by caffn8me:

I never stated that 8a or 30a were used by BT. I stated that the VDSL profile used would affect the attainable rate and that IP profile wouldn't. I also said 'include' - I didn't say 'all factors which affect attainable rate'.

It's ridiculous to suggests that IP profile affects attainable rate.

I haven't

Lol, 3 years old and needs updating

Perhaps you'd care to suggest what the updates should be

In reply to a post by caffn8me:

I haven't

You're the only one talking about it.

In reply to a post by caffn8me:

Perhaps you'd care to suggest what the updates should be

Interleaving has a significant impact on attainable.

In reply to a post by caffn8me:

I've already posted what the factors include. The IP profile is not one of them.

Upstream IP Profile (almost-)uniquely defines the Openreach product. So simple. One BTW Further Diagnostics test. 2 = 40/2, 10 = 40/10 or 55/10, 20 = 80/20.

You are going from the upstream sync to prove you are on one of those middle two, and the downstream to prove it is the 55/10 one.

But if banding is in place your reasoning falls down. Banding on both downstream and upstream could give those results. Or even just on upstream.

Having said that, you are almost certainly correct in your assertions! All I, and I think BatBoy, are trying to achieve is confirmation of that, rather than an assumption.

"... when you have eliminated the impossible, whatever remains, however improbable, must be the truth". You consider it not being 55/10 as impossible. So provably eliminate it.

In reply to a post by RobertoS:

All I, and I think BatBoy, are trying to achieve is confirmation of that, rather than an assumption.

Yes

Given the estimates I actually think the upstream attainable is low also.

A line that can sync at 80mbit usually has attainable in the 30mbit range.

BT wont want to do anything whilst on the 55/10 service, as the argument will be a 54.5mbit sync speed on a 55 service is well within acceptable range. Of course if you upgrade to 80/20 then report the fault, with those speed estimates things should be a different story.

Edited by Chrysalis (Fri 19-Aug-16 02:22:49)