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[jasjeet]

1) 32398/7199
2) 33-35mb down, 8.2mb up
3) At least 9 months
4) 2 line faults, first time engineer reset DLM, 2nd time they didn't. Around jan 2016.

Sky won't do anything since it's above/within estimates.

[Bigmac77]

1. 14999
2. 19000
3. 15 weeks
4. Noisy line fault, fixed in October.

[broadstairs]

1) 59995kbps
2) 62759kbps
3) 130 days
4) following about 2-3 months of problems with 3 BTOR visits
5) current SNRM 6.9 db was over 7 on initial re-sync recently

Stuart

[peterj]

1, 35000kbps
2, 40000kbpa
3, over 6 months
4, very high ES for around a week for no obvious reason. Banding happened a few days in. High ES continued for a few more days then line stabilised without intervention.

[22over7]

1. 66999    (u=19999)   kbps
2. 73148    (u=25129)   kbps
3. about 18 months
4. Possibly, family member trying to restart switched off broadband
5. snrm 7.6 (u=15.4).  Line generally very stable.

[parkdale]

1. 48230 down 16998 up
2. 56000-57200 down 17653 up
3. 7 days since last dlm move was 46230 before for 35 days.
4. Was at 55700 then suddenly dropped one day 
5. Upgraded line from 40 to 80Mb mid December.

Currently interleaved on down stream 8ms +3inp

[Steven_belfast]

1. 60000 down 19455 up
2. 74312 down 19455 up
3. 5 months capped
4. Testing Netgear router ( Beta testing unit bad firware causing sync drops )
5. Current SNR is 18.7dB

Line was capped at 35 but after a fight with EE then raised a task to BTW and line now capped at 60

My understanding of the DLM system -

DLM uses a system called ‘Caution Counters’, this dictates, based on the quality and performance of your line what band/profile your line should be on as well as how long it will take before your line needs to be stable (Green quality) before increasing the speeds.

The counter then starts to count up to 9, the line remained green; the top profile would have been re-applied. In this case, the line started to error again, DLM reduced the profile again to try and control these errors.
You can see that there is a ‘barrier’ which shows at 0, 8, and 24. If your line had a bad day, you’d be put on barrier: 8, your line will then have to wait for 9 days (barrier=8 +1) before any positive profiles changes would be made. If your line continues to error/perform poorly, the barrier is increased, following the same rule as before.It’s important to bear in mind that it’s very unlikely that your profile will be set at its lowest without there being some kind of fault with the service, which an engineer would likely have visited and repaired and performed a DLM Reset.

At this point Openreach are also testing new 3dB SNR's in my area and so i am waiting for 25 days of sync before i reboot the modem.

[ejs]

Why would you reboot the modem? Openreach don't need to wait for someone to reboot their modem before a new profile will be used, they could cause a reconnection whenever they want. I also heard somewhere that the XdB lower target SNRMs won't be applied to lines on which the DLM has already done something to reduce the speed.

[indiekid]

1. 34,999 down 5,500 up
2.  44,500 down 5,500 up
3. 5 months capped
4. As per Steven_belfast testing Netgear modem/router. Initially syncing at same speed as previous router, gradually lost 10 meg over beta test timescale.
    Speed never recovered following re-installation of original router.
5. BT wholesale performance check shows IP profile 33.84 Mbps. When line was installed initial estimates of attainable speed were around 46 Mbps with a
    guaranteed minimum of 35. Throughput for first year was in line with these estimates.
    When contract was changed from Infinity 2 to Infinity 1 it took a month for BT to change software cap from 35 to 52. Speed estimates are now in
    range of 30-39 so BT will not investigate blaming crosstalk.

[ZZDave]

1. Current rate : 9999 / 39998
2. Max rate : 19395 / 71654
3. Like this since last October when 'speed issue' was fixed according to BT Fault reporting.
4. These stats were similar for about a year until start of July 2016, when e-mail arrived from BT trumpeting that my Infinity 1 'speed has been raised to 52Mbps'. Looked at stats and sure enough, Current rate downstream 50Mbps! Great, wonderful! Like this for a week.
Then went on holiday for a fortnight, modem left on as usual.
Came back, end of July. Router TP-Link TD-W9980 connecting and disconnecting dozens of times a day.
Put HG612 back on, synced and more stable, but around 27Mbps. Reported fault to online chat. Agent did remote test and said "there IS a speed issue here" and reported-on the fault.
Got phone call, "engineer needs to call," made appointment. On day of visit get another call, told fault external to premises, engineer doesn't need to call. Fault stayed open until October (!) then mysteriously became closed. Checked line speed, and was as above in item 1.
BT wholesale test says 7-8 / 35-38 and made new call to online agent who says "it's above the minimum for your line so we can't do anything."

Where is my 50Mbps I had for just a week in July? Doesn't "39998" look like an artificial cap?

Dave

[skyeci]

Yes I would think so.

[jasjeet]

I noticed that DLM keeps enabling and disabling upstream G.INP, even though it's capped...
So rather than it waste it's changes in upload, I capped it at 6.5mb from 7.2mb pushing upload SNR to 14dB. Maybe it'll work on the downstream now.

[GaryW]

1) 14999
2) 18500-19500 (night-day) although immediately after resync it's about 20500
3) 15 days (see below)
4) Lots of RFI generated by stuff in my house, eliminated about 2.5 months ago
5) I used to be banded at 11399 due to lots of RFI, eliminated it and after about a month (5th Nov) modem resynced with new banding at 13096.  A further 30 days later (5th Dec) modem resynced with new banding at 14999.

[loonylion]

1) 43999
2) currently 46396 but I've seen higher, as high as in the 49xxxs
3) a hell of a long time, at least a year (from a post I found it could be coming up on 2 years).
4) I think it was caused by the ECI modem I was originally supplied with
5) my DS SNRM varies between 7 and 9.

if vectoring and/or 3dB target come to my cab I will absolutely want this removed.

Appears to have been removed now, since the closure of mydslwebstats I can't say exactly when; however 8 or so days ago we had a power glitch (sustained low voltage on the mains for about 35 minutes) which may also have affected the cabinet, alternatively I powered our equipment off during the incident and it remained off for several hours. Sync is now 46553 with an snrm of 5.1dB