ADSL Max Question?

benjo plz. · 9 Apr 2006 at 15:55

PiKe said:
You obviously know the system inside and out and no matter what I say I'lll be wrong.

Hmmm maybe, how do you know its been reset at the bras?

Intra-Agnostic · 9 Apr 2006 at 15:56

Tim said:
Try it now, you may find you've been upgraded already.

Just tried. Nothing yet.

PiKe · 9 Apr 2006 at 15:57

Phnom_Penh said:
Hmmm maybe, how do you know its been reset at the bras?

Because the BRAS controls the datarate, and thats based off the sync rate (it works out an average and sets it to the nearest .5mbit).

benjo plz. · 9 Apr 2006 at 16:04

PiKe said:
Because the BRAS controls the datarate, and thats based off the sync rate (it works out an average and sets it to the nearest .5mbit).

Hmm I think I misunderstood you, I thought you meant a radius cap had been put on your line, but what's happened is that the BRA traning period has been reset (I presume you meant this) and that the line will go back to initial 2mb rate? It could probably take up to the three days for the data rate to go back to near MSR then.

PiKe · 9 Apr 2006 at 16:06

Well it's 3 days since initial sync at 6mbit, so looks like some problem has caused a reset of the data.

benjo plz. · 9 Apr 2006 at 16:07

PiKe said:
Well it's 3 days since initial sync at 6mbit, so yes it looks like that.

You didn't unplug/turn off your router did you?

PiKe · 9 Apr 2006 at 16:08

Phnom_Penh said:
You didn't unplug/turn off your router did you?

Nope, and resyncs only happens when the line became unstable.

Had Max since 2:30am on Friday 7th so maybe only 2 days.

benjo plz. · 9 Apr 2006 at 16:13

I'd leave it for a few tbh.

loltim · 9 Apr 2006 at 17:08

So my connection still could sync at 8Mbps even though Nildram say I'm migrating to 6Mbps?

Stats-

Sorry for all the questions but the thread is titled "ADSL MAX question" so meh

Still not fully sure how MAX differs from standard DSL..

OllyM · 9 Apr 2006 at 17:16

Phnom_Penh said:
Won't do bub.

Rubbish, it does work.

I did this and didn't get affected by the 2mbit BRAS profile problem.

http://www.adslguide.org.uk/newsarchive.asp?item=2617

The most critical piece of news is that most of the regrades occur over night, and it is best to have your ADSL modem turned off or disconnected from the line at this time if the BT Wholesale systems are to upgrade both the line and throughput speeds to a much faster level in the shortest possible timeframe.

http://aaisp.blogspot.com/2006/04/rate-limit-on-max-lines-news-from-bt.html

The issue appears to be where a line is connected to a router and so on-line when the regrade actually happens, BT do not recognise the new line sync as being from a Max line (it's too quick). Later re-syncs at the same rate do not prompt BT to take any action either. This means the normal 75 minutes for a new or regraded line does not happen. The line should have the rate correctly set after 3 days. The reason some lines appear to work is that they are either slow to reconnect, not on-line during the regrade, or sync at a different rate later. Ironically this does mean that really good lines that always sync at a full 8128M are unlikely to have the speed change appliued promptly.

Plus a post from a Nildram rep on ADSLguide gave the same information. It does work.

You should loose the 2mb cap three days or less after regrading.

Or instantly if you turn your router off overnight...

loltim · 9 Apr 2006 at 17:19

So we should switch off our routers when? The night before activation day?

OllyM · 9 Apr 2006 at 17:23

Your SNR isn't great for your attenuation, you should see close to 8mbit though...

And switching your router off is up to you, personally, if you don't need your connection to be up, I'd do it. I have done my migration in stages (two bonded lines), so that I could drop back to a single line in case of problems. In the end it worked out well.

benjo plz. · 9 Apr 2006 at 18:09

OllyM said:
Rubbish, it does work.
I did this and didn't get affected by the 2mbit BRAS profile problem.

Depends on which problem you mean, but when the modem is first turned on it should (afaik) sync at 8mb, but will be limited to 2mb for atleast 75mins, as 2mb is the initial data rate that training starts at.

If you mean people are being stuck at 2mb after the 75mins, you just unplug your router for 30mins, and then plug it in again, meaning the training should restart. If it still doesn't go up, as I said before, you have to wait three days, and then it should.

OllyM · 9 Apr 2006 at 18:17

Phnom_Penh said:
If you mean people are being stuck at 2mb after the 75mins, you just unplug your router for 30mins, and then plug it in again, meaning the training should restart.

Which didn't and still doesn't work properly.

Trust me, there are a fair few AAISP customers who are synced at 8128 or near, and still stuck on 2mbit.

Nothing with Max is working properly at the moment. The DLM isn't storing data for some lines, so they're syncing too fast and constantly dropping out. I know somebody with two Max lines getting over 100 dropouts a day (no joke). His line is all over the place and the DLM isn't kicking in.

Max generally has been an absolute farce. People with decent lines are fortunately not seeing many problems, but unfortunately most people don't have perfect 8128/832 or 8128/448 lines.

benjo plz. · 9 Apr 2006 at 18:26

OllyM said:
Max generally has been an absolute farce.

I know, I'm not going to even consider it until we find out how the first regraded lines end up after the adaption period.

OllyM said:
Trust me, there are a fair few AAISP customers who are synced at 8128 or near, and still stuck on 2mbit.

How long they been on max?

OllyM said:
I know somebody with two Max lines getting over 100 dropouts a day (no joke). His line is all over the place and the DLM isn't kicking in.

nice

. Tolien mentioned someone who'd been losing sync upto 4 times a min, go BT.

OllyM · 9 Apr 2006 at 18:57

Phnom_Penh said:
Tolien mentioned someone who'd been losing sync upto 4 times a min, go BT.

I suspect it's the same person, or two people actually

How long they been on max?

Some since last Monday... hence the problem.

CurlyWhirly · 9 Apr 2006 at 19:46

Crikey, I didn't think that the Max DSL launch was that much of a headache :eek:

I suppose it is to be expected as the rate adaptive broadband technology is new isn't it :confused:

I won't be put on it until at least the end of next month when my current contract runs out and I'm glad I've had to wait as it sounds like a nightmare!

OllyM · 9 Apr 2006 at 19:52

If you've got a decent line, it's not a problem.

The only thing now is my variable speeds...

My line's flat out at the moment, earlier on this morning it was also flat out and was getting just over 7mbit...

antc · 9 Apr 2006 at 20:09

right just checked my order on the nildram site, says install date was 8th april and the welcome letters have been sent out on the same day.

problem is im still connecting at 2meg and nothing has changed.

has anyone else had this issue on nildram at all??

tolien · 9 Apr 2006 at 20:12

OllyM said:
I suspect it's the same person, or two people actually

Yup. I was talking about String, you're talking about charlie. Same odds.

I suppose it is to be expected as the rate adaptive broadband technology is new isn't it

Not really. The LLU providers (and ADSL ISPs outside the UK) have been doing ADSL with rate adaption for years...