In reply to a post by giggsy1977:

I was assuming the TCPOptimiser would ... not change settings ... in the modem or router.

It's OK, it doesn't!

What MTU did TCPOptimiser set for your PC? Is it compatible with the MTU in router?

XRaySpeX - so it won't have changed any settings in my homehub 3.0 or openreach modem? I don't know what settings the MTU was at. I just set it to what I should be getting and hit go.

Just run it up again and just look at the MTU value in the middle of 1st Current Settings page. Then look at MTU value in router and report back.

Thanks XRaySpeX. Don't suppose you know how to get my MTU from the homehub?

In reply to a post by giggsy1977:

Their line is set on a profile around 24Mbps which is odd as it should be 37.xx profile...is that just the settling in period?

I assume you are talking about the "IP Profile", which is visible as part of the results of running the BT Speedtester?

That profile value is set at the cabinet, based on the actual sync speed - where a 40Mbps sync speed gives a profile of 38715 (or 38.7), and an 80Mbps sync gives 77.4.

So, if your parents are too far from the cabinet to achieve a 40Mbps sync, they won't get an IP profile of 38.7.

What is the prediction for their phone number at BT Wholesale's checker?

There *is* another profile - the one set by DLM. That is visible to ISPs, but not us. You didn't mean that did you?

DLM does indeed monitor the line for a couple of days - subject to whatever sync the modem managed - and then decides whether to alter the DLM profile. The choice of profile made by DLM may specify that interleaving is turned on (which steals some of your speed anyway) and may also restrict the speed further.

DLM will normally intervene at 48 hours, if need be.

Anyway, back to my issue from my install yesterday...I called my folks this morning while the Openreach engineer was fitting theirs and asked if he would mind looking at mine and performing a test. He told me the line is getting 67.172 down and 12.816 up. Tested this with my mothers Windows 7 laptop tonight and got 59.40 down and 8.65 up. That's more like it! Although my upload profile is 20Mbps so I was expecting quicker

With a 12.8 sync, I'd expect an actual speed of around 10.0-10.5.
But the BT speedtester isn't the best for finding absolute top speed, nor for testing consostency (because of the hour delay).

Have you tried speedtest.net?

(my folks is 10 and they get 9.05 Mbps).

Wow - I could only get 9 upstream when I hacked the modem to unlock it, and turn off the QoS support. Without that, it would be more like 8.0-8.5.

In reply to a post by giggsy1977:

Another thing. I tried TCPOptimiser and that made no difference (saw it in the forums). Will trying that have affected any hub or modem settings or just on my old pc? Hope it hasn't affected my hub or modem, especially during the training period.

I found the same thing with XP when I was first on the 80/20 trial.

Here's a post on the Plusnet forums from back then.

I also found some issues with a firefox plugin that seriously hampered throughput.

It can be worth trying different browsers too.

WWWombat - thanks for the comprehensive reply - much appreciated.
I got the IP Profile from the BT Speedtester. They were predicted 54.7Mbps, but as they are on Infinity 1 they will only get 38Mb max. I have had another look today and the profile for down has dropped to 7.91Mbps. Is this part of the DLM in that the profile of the line changes? They are only 300m from the cabinet and should get 38Mb easily. I too was impressed with the 9.05Mbps upload! Quicker than mine on Infinty 2 - not checked mine since last night - leaving it alone to settle down and looking for a newer pc so I can take advantage of the speed. I shall have a look at the forum link you provided too. Thanks.

In reply to a post by giggsy1977:

They were predicted 54.7Mbps, but as they are on Infinity 1 they will only get 38Mb max. I have had another look today and the profile for down has dropped to 7.91Mbps. Is this part of the DLM in that the profile of the line changes?

Yow - that's not good, and probably a sign of a fault.

It will be DLM having intervened, probably as a result of either errors on the line, or from disconnections. DLM will be trying to stabilise things.

My current line is 400 metres long (by road, not as-the-crow-flies), with a prediction of 55/18, but an actual of 80/20 (profile of 77.4/20).

It would, with such a cursory look, suggest a fault on the line.

RobertoS - it was on 24.xx yesterday so I shall give it 24 hours and see what happens. If still no joy I shall call BT.

Back up to 24.xx now judging by Speedtest.net. Should easily get 37 - 38 though. Shall call BT for them tomorrow.

Edited by giggsy1977 (Sat 06-Oct-12 19:05:42)

Well my folks got their speed problems sorted and now get 37.40Mbps down and 9.05Mbps up (they are on Infinity 1 by the way). The internal wiring split into two extensions before heading to the master socket. The cable wasn't correct spec either. The OR Engineer was great and put a new cable in from outside to the master socket (I did a bit of drilling for him!) and hey presto! My download appears to have settled at 50Mbps but my upload is very poor at 6.5Mbps (I am on Infinity 2). Not impressed! According to the Engineer I may be being capped up as a test I asked him to do while sorting my folks showed 10.4Mbps max. BT say they can't change the upload though...sorry for long post. :$

Edited by giggsy1977 (Mon 15-Oct-12 20:47:56)