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10-day stabilisation period.

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Ezzer:
This is the short offical version


The 10 day stabilisation period

What is the 10 day stabilisation period and what is it for?
The 10 day period is to allow DLM to re-profile the line, in order to stabilise it and to determine the MSR.

What actually happens during the 10 day period?

DLM collects performance data and determines the stability of the line. If the line is unstable, it re-profiles the line and then monitors it again. This process repeats until the line is stable and can take up to the 10 day to complete.
During the 10 day period, Max tracks the lowest BRAS rate and once the period is complete, the MSR is set accordingly.

What happens once the 10th day has passed and the MSR and FTR are set?

Max and DLM continue to work every day even after the MSR and FTR are set. If a line becomes unstable after the 10 day period DLM will still attempt to stabilise the line in the same way that MAX will continue to change the BRAS profile if the line rate fluctuates after the 10 day period.
The MSR and FTR are purely for reporting purpose as described below. The MSR and FTR are fixed after the 10 day period, unless a recalculation is triggered by BT Wholesale Broadband Assurance. This initiates a new 10 day period, purely for the MSR / FTR calculation.

What happens if I do not use my modem until (e.g.) the 7th day?

The MSR and FTR will be set after the 10th day using the data available since your first log-in. DLM will continue to try and stabilise the line as described above if necessary.

What happens if I’ve been on holiday and haven’t used the service in the first 10 days?

The MSR and FTR process uses a 10 day rolling window in order to capture circumstances like this. Stabilisation will occur as described in the answers above. See section 7.2.

Does this mean I’ll get the same Line Rate when I retrain the modem after the stabilisation period?

Not necessarily. Broadband Max is a rate adaptive service and will always try to sync up to the highest line rate your line can support reliably. When you sync on subsequent occasions you may experience different Line Rates. The Line Rate achieved is dependent on a number of factors including line conditions and any local sources of electrical interference (see the section on REIN in this document). Line conditions can be affected by weather conditions such as rain or prolonged dry periods. Electrical storms can also have a significant impact on line rates you may achieve.

 ;D

Weaver:
@Ezzer, that's from the Myths and Legends document isn't it? Worth putting that up, definitely.

Everyone - it seems to me then that many people, myself included in the case of one of my phone lines in particular, are really at a disadvantage by the assumption in this that there's only ever one "day 1" in the life of a phone line.

Users who have been using ADSL for a long time, from before the time when physical remedial work has been done one their line, or before they have improved routers and other aspects of their hardware and environment, are it seems to me forever tarred with the FTR derived from this one-and-only ten day period. So if you start a new service, make sure you start "fast" and do everything right from day one, so as to get a better service guarantee and a chance of getting "faults" fixed where "faults" are droops in performance, whereas the ancient customer or the customer who was simply unlucky during the ten day period, be it with weather, environment, noise environment or deeply unwise choices of in-premises wiring, unwise router or microfilter choice etc will be penalised forever.

My recent experience with a moronic support department at a well-known ISP was that even though I had been an ADSL user with that same ISP since 2004, before IPStream Max became available in the area, was that the ISP was still quoting numbers at me that they seemingly were obtaining from BT Wholesale and that were so out of date that they were still trying to talk to me about my line as if it were "capable of 500kbps" despite it having run all year for the last couple of years at well over 1.5bps on the Max service after a free upgrade. Or perhaps they just found it all too confusing and should visit this site from time to time.

Has anyone else had the experience of getting stuck with an ancient "first 10-day" period? Is there a way to get unstuck?

It seems to me that Openreach would do well to offer more premium chargeable services to end users surrounding ADSL installation. I would have thought that it would be better to offer an option for end users to be able to get expert advice from a specialist engineer before and after the initial period, and for the user to be able to then make changes or improvements or as Openreach to help with this, and then optionally ask for a second test period to see how the recommended or improved plan works out. And I would expect all of this to be chargeable. But small business users particularly would be able to get a much less random outcome.

Does anyone know if Openreach can be booked directly simply to carry out a line assessment? And then to recommend chargeable line upgrade work that the user can pay for, rather than just fixing "faults"?

waltergmw:
Hi Weaver,

I think your ISP can only get BT O to re-train your modem if there has been a definite fault on it.

I've been helping one such person where an anomaly had been observed.
The attached picture is the current data provided from BT, but it won't be updated until the training period has elapsed whch will be next Saturday.

Kind regards,
Walter



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kitz:

--- Quote ---Has anyone else had the experience of getting stuck with an ancient "first 10-day" period? Is there a way to get unstuck?

--- End quote ---

Its something that a BTO engineer can request after fixing an obvious line fault, or your ISP can request it too after a major fault fix. - Some ISPs may take more convincing than others.

>> still quoting numbers at me that they seemingly were obtaining from BT Wholesale

The BTw database is a guide - and is often 'conservative'... as they also make an allowance for people having not the best internal wiring/filters etc.

>> despite it having run all year for the last couple of years at well over 1.5bps on the Max service after a free upgrade.

lol - you'd think they would take some not wouldnt you.
I know on my own line (7dB atten) they were quoting 6500..  then after 2 years of continual sync of 8128 they increased it to 8000.  It stayed at 8000 for all of 2 months as I then went LLU.... and they put it back down to 6500 - despite me being able to get 24Mb!

>> I would have thought that it would be better to offer an option for end users to be able to get expert advice from a specialist engineer before and after the initial period,

Thats kinda what it used to be like in the 'old days'..  a BT engineer installed adsl for you and did a line check.. and in some cases measured the attenuation before they would even install adsl. 

£150 for install... min £50 for a modem or £100 for router & min £30pm for 512kbps.
and to top it off sod all if you lived too far from the exchange. 
I remember a friend of mine biting his nails as he lived 2 miles from the exchange and it was touch and go if he could get 512kb...  ahhhh the good old days :(

The problem is adsl is dirt cheap these days - theres little profit in it particularly IPStream. .. and when you get cheap then standards go down :(
rate adaptive DSL is a bit of a nightmare for openreach lots more call outs on long lines.

Ezzer:
@ Weaver, yes that is from the Myths and legends document.

Also to quote
"It seems to me that Openreach would do well to offer more premium chargeable services to end users surrounding ADSL installation. I would have thought that it would be better to offer an option for end users to be able to get expert advice from a specialist engineer before and after the initial period, and for the user to be able to then make changes or improvements or as Openreach to help with this, and then optionally ask for a second test period to see how the recommended or improved plan works out. And I would expect all of this to be chargeable. But small business users particularly would be able to get a much less random outcome.

Does anyone know if Openreach can be booked directly simply to carry out a line assessment? And then to recommend chargeable line upgrade work that the user can pay for, rather than just fixing "faults"?"

This isn't permited by offcom. Rules are as the end user your only contact is via your service provider,who then contact BT whole sale who then might contact openreach. and the chain works in reverse as well. For instance an Openreach engineer is not permited to speak directly to the service provider

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