In reply to a post by RobertoS:

Regarding the OP's problem, the Plusnet Current line Speed is only updated two or three times a day anyway, so there is often a delay of a few hours for it to reflect the IP Profile. That may or may not have been a factor here - I don't think we know the time span between the upgrade and the OP.

I've now found that he'd been on fibre for about 2 weeks, so clearly it wasn't awaiting a thrice-daily update.

What happens is that it is only updated when an automatically generated delta report is received and unless a sync speed change happens it isn't generated so you can be stuck with a spurious value

So basically then I presume the Plusnet rep had to force a sync speed change that caused it to update.

That probably rules it out, but not certainly. As has been said, updates do sometimes fail, but once it does fail there is no further check until the next re-sync. The report Plusnet get is changes to IP Profile since the previous report, so any particular line only gets one chance.

It will be the Current line speed that CS corrected though.

The user-driven check is to check the IP Profile using the further diagnostics of the BT Wholesale Performance Test and compare it with the Current line speed.

In the case of the upgrade from ADSLx to FTTC I would have thought Plusnet would have reset it automatically to the default at the time (maximum) and wait for the report to lower it if necessary. It certainly shouldn't have happened.

Not necessarily. Plusnet CS have direct access to setting the Current Line Speed.

Fair enough, either way he's much happier

They normally do but sometimes a delta report arrives after that related to the old ADSL connection and that overrides it

Thanks for all the tech. stuff, useful to know.

From my son's POV the important thing is that, despite the initial hiccup, he's now up and running on a good fibre connection

If I could get that sort of speed over fibre I'd be sorely tempted, but all BT will quote for me (distance from cab being the issue) is 15-22Mb estimated download speed, 13Mb minimum guaranteed speed (+/- 1-2Mb of course). Seeing as I get around 7-8Mb on ADSL I can't really justify, to myself, the extra cost of fibre.

You should keep an eye out for the deals. I pay BT only £10 extra for fibre and TalkTalk often do unlimited fibre free (just pay line rental).

I'm aware of some of the deals. At the moment I could go BT Infinity, I'm with BT for land line, but don't like the month 13+ price and don't want the hassle of seeking a new deal every 12 months.

Ok, maybe I'm lazy, but my present ISP is rock solid, some might say stolid, but the price is ok for me and, to be honest, the speed I get is perfectly adequate for me.

It's just that, sometimes, I feel I ought to be on fibre, though no real reason.