When the BT speedtester starts working you'll be able to see the IP profile. It's not exact, but it'll be reasonably close to your overall sync.

Yup, I know.
I'm pretty certain I'm at maximum sync (given the download speeds I'm getting from Usenet) but I'm reluctant to try the modem flash, just to find out the sync (just a shame the installing engineer wasn't able to tell me).

Based on the usenet speeds you mentioned, i'd say you have the full 38717/10000

ISP and router?

In reply to a post by orly:

Based on the usenet speeds you mentioned, i'd say you have the full 38717/10000

I would think that's about right.
I estimate my cable length (to the cabinet) to be around 200 to 400 metres (depending on the road/path routes used from the cabinet round the corner, and taking into account the order in which they built the houses), the 400m route is the less likely, as it would have involved routing phone cables through a part of the estate which wasn't built yet. The most obvious route is 275m.
So I should get maximum speed on the current profile and a bit higher when BT switch to 17a. It's just a shame the engineer was either unwilling or unable to tell me the actual line length, or the sync speed.

No idea what I'm synced at. The installing engineer didn't plug any test equipment into the line (or the Openreach modem) - don't think he knew how (I even had to keep him here whilst I tested the Home Hub, using a laptop, to see if I even had an internet connection - all the LEDs were on, and he was happy to leave it at that, without any testing whatsoever).
He had a hand-held test instrument but said he didn't know how to use it to find out the cable length to the cabinet.

Oh dear, they are employing 'ex-army' noobies to do a lot of the installs. They seem to think that these managed installs are 'easy'. They sometimes can be, but with no background knowledge, and apparently no skills, they seem to be getting it so wrong.

[censored] have you still got no dialling tone ? Part of the engineers task is to carry out a successful Eclipse test, this is not possible with NDT.

Post deleted by T1AA

In reply to a post by MHC:

Ignore the speedtesters and use the TBBmeter facility to download a large file.

Then watch the graph in TBBmeter and Task Manager - is it reasonably flat or up and down erratically? and what is the estimated speed (%age of 100Mbps)? TM shows raw unprocessed data.

Also, check your MTU and RWIN settings - they can have an effect. Use http://www.dslreports.com/tweaks to analyse and suggest.

I downloaded a large file and the graph on TBB meter and task manager both went up and down quite erratically the speed was 1.530MB/sec 12.243Mbps (10-15% of 100.0Mbps).

I use windows 7, the mtu was 1492 using the link you posted and using command prompt it showed 1500 also Receive Window (RWIN): 630528.

Router? ISP?

The router is the Linksys e2000 and my ISP is Merula