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[pooclah]

This post may be in the wrong place because the only issue is my confusion.

My line had a DLM initiated resynch last night.  After that I have lower U\S and D\S SNRM
Higher D\S Synch
Higher U\S and D\S attainable than before.

I can’t understand how when my U\S was at max the SNRM can decrease but the attainable increase.

If anyone is interested in taking a look my stats are on mydslwebstats.

[NewtronStar]

Going from an SNRM of 6.2dB to 4.7dB which is a very odd value and also the upstream SNRM has changed though the time it occurred after midnight always make me think of BT exchange maintenance but that's normally down for two hours.

There is only one way to be sure a quick re-sync will show if it's one of those good crosstalk syncs of something other 

[pooclah]

Hi NS

The resynch alert from mydslwebstats said  - Reason: 1 Remote Defect Indicator/DLM.

Unfortunately I’m working away from home so no quick resynch until the weekend.

[skyeci]

Is it possible he has been put on one of the new  lower snr profiles.  What exchange are you on please?

[NewtronStar]

Is it possible he has been put on one of the new  lower snr profiles.  What exchange are you on please?

Well that starts of at 5dB then 4dB and finally 3dB the upstream SNRM is not effected and pooclahs did change a bit and the attainable sync is lower than the sync.

[pooclah]

Hi skyeci

The exchange is Newbury THNU

[skyeci]

There is a list on tbb. Trying to find it..

Not on the list by the looks of it..

Code: [Select]

Ashburton
Ashcott
Ashreigney
Ashwater
Axbridge
Axminster
Baltonsborough
Bampton, Devon
Banwell
Barnstaple
Bath Kingsmead
Batheaston
Beaford
Beaworthy
Beckington
Bere Alston
Bickington
Bickleigh
Bideford
Bigbury-On-Sea
Bishops Lydeard
Bishops Nympton
Black Torrington
Blackawton
Blagdon
Blagdon Hill
Bleadon
Bovey Tracey
Bow
Box
Bradford -On-Avon
Bradford- On-Tone
Bradworthy
Branscombe
Bratton Clovelly
Braunton
Brayford
Brean Down
Brent Knoll
Bridestowe
Bridgerule
Bridgwater
Bristol West
Brixham
Broadhembury
Bruton
Buckfastleigh
Buckland St.Mary
Budleigh Salterton
Burnham-On-Sea
Burrowbridge
Castle Cary
Chagford
Chapmanslade
Chard
Charlton Mackrell
Cheddar
Chelston
Cheriton Bishop
Cheriton Fitzpaine
Chew Magna
Chewton Mendip
Chillaton
Chilton Polden
Chiselborough
Chittlehamholt
Chudleigh
Chulmleigh
Churchill
Churston
Clevedon
Clovelly
Colaton Raleigh
Colyton
Combe Down
Combe Martin
Combwich
Compton Dando
Copplestone
Cornwood
Corscombe
Corton Denham
Craddock
Cranmore
Crediton
Crewkerne
Crowcombe
Crownhill
Croyde
Cullompton
Dartmouth
Dawlish
Devonport
Ditcheat
Dittisham
Dolton
Drewsteignton
Dulverton
Dunster
East Allington
Edingworth
Evercreech
Exbourne
Exeter
Exeter Exminster
Exford
Exmouth
Faulkland
Feniton
Flax Bourton
Frogmore
Frome
Gara Bridge
Glastonbury
Harbertonford
Hartland
Hatch Beauchamp
Hatherleigh
Hawkchurch
Haytor
Hele
Hemyock
Henlade
High Bickington
Holbeton
Holford
Holsworthy
Honiton
Horns Cross
Ilchester
Ilfracombe
Ilminster
Instow
Ipplepen
Isle Brewers
Ivybridge
Kennford
Kentisbeare
Kingsbridge
Kingskerswell
Kingston St Mary
Kingswear
Langport
Langtree
Lapford
Launceston
Lewdown
Lifton
Limpley Stoke
Loddiswell
Long Ashton
Long Sutton, Somerset
Longdown
Lulsgate
Luppitt
Lustleigh
Lydeard St.Lawrence
Lydford
Lyme Regis
Lynton
Maiden Bradley
Manaton
Mark Moor
Marston Magna
Martock
Meare Heath
Mells
Midsomer Norton
Milborne Port
Milverton
Minehead
Modbury
Morchard Bishop
Moretonhampstead
Nailsea
Nether Stowey
Newton Abbot
Newton Ferrers
Newton St.Cyres
Newton Tracey
North Cadbury
North Curry
North Molton
North Petherton
North Tawton
Nunney
Oakford
Oakhill
Okehampton
Ottery St.Mary
Paignton
Pill
Pilton
Pinhoe
Plymouth
Plymstock
Porlock
Portishead
Priddy
Princetown
Puriton
Radstock
Roborough
Salcombe
Saltford
Sampford Peverell
Seaton
Shaldon
Shaugh Prior
Shebbear
Shepton Mallet
Shiphay Collaton
Shirwell
Sidbury
Sidmouth
Silverton
Somerton
South Brent
South Chard
South Molton
South Petherton
Sowton
Spaxton
St. Budeaux
St. Marychurch
Stalbridge
Starcross
Staverton
Stockland
Stogumber
Stoke Canon
Stoke Fleming
Stoke Gabriel
Stratton On The Fosse
Street
Stroud
Sutton Cross
Swimbridge
Taunton
Tavistock
Tedburn St.Mary
Teignmouth
Temple Cloud
Templecombe
Timberscombe
Timsbury
Tiverton
Topsham
Torcross
Torquay
Torrington
Totnes
Trowbridge
Washford
Wedmore
Wellington
Wells
Wembury
West Coker
West Harptree
Weston Super Mare
Weston Zoyland
Whiddon Down
Whimple
Widecombe -In-The-Moor
Williton
Wincanton
Winkleigh
Winscombe
Winsford, Somerset
Witheridge
Wiveliscombe
Woodbury
Woolacombe
Worle
Wrington
Yatton
Yealmpton
Yelverton
Yeovil
Yetminster

[Moderator edited to surround the list with [code] . . . [/code] tags.]

[j0hn]

This is quite a strange 1 to be honest. Your attenuation has dropped a tiny bit, and both Ds and Us Sync/Attainable have climbed.

Can you check the vectoring status of your cabinet? That's something MDWS can't show.
If it's not vectoring then it could be a bad crosstalker is on holiday or has ceased their service. Any neighbours on holiday or moved/moving?

[pooclah]

Hi j0hn

I’ll ask the wife about neighbours when I ring her later.
I won’t be able to check the modem for vectoring state until I’m home at the weekend.

It’s mostly the changes in U\S stats that don’t make sense to me at the moment

[highpriest]

Can you check the vectoring status of your cabinet? That's something MDWS can't show.

How do you check that?

[roseway]

Look at the Stats tab in DSLstats.

[highpriest]

Ah yes, thanks

Sadly, mine says: 5 (VECT_UNCONFIGURED)

[parkdale]

Although my exchange is not listed, my line has the same obsession with lowering SRNM down past 4db, this is 4 days after last re sync because of falling srnm.
I'm on an ECI exchange  , had 17crc's in last 15 mins, this means i'm going to get kicked off again .
Line currently at 54467Kbits/s down 16647 up.

[bkehoe]

Resync at 00:30 last night myself. I've a 8924 so fairly slow to resync compared to other modems. Look to have a 4dB target on upsream and 5dB on downstream??

For the last year I've been solid at about 18MBit upload, 59MBit download sync on 6dB SNR which stays stable. 

VDSL Port Details       Upstream         Downstream
               Line Rate:     20.063 Mbps       62.974 Mbps
    Actual Net Data Rate:     19.999 Mbps       62.975 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        4.0 dB            5.1 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:        7.4 dBm          12.5 dBm
           Receive Power:       -5.1 dBm          -8.0 dBm
              Actual INP:        0.0 symbols      49.0 symbols
       Total Attenuation:        0.0 dB          17.9 dB
Attainable Net Data Rate:     20.759 Mbps       60.058 Mbps

Edit: seem to have some upstream ES building (35 in 19 hours); does DLM monitor upstream?

FEC:      1852977      432
CRC:      4      61
ES:      2      35
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0

[pooclah]

Interesting.  What exchange are you on and do you know what type of cabinet you are connected to?