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Standard User nemeth782
(regular) Sat 22-Feb-14 23:13:44
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How long for this line to recover?


[link to this post]
 
I've had issues with my infinity 2 service since it's install 3 weeks ago. The HomeHub5 is utterly useless and reboots constantly, I've now added an openreach modem (bought at my own expense) and it seems to have become stable.

However, my line has been destroyed by DLM, I have an 89mb attainable rate but a 60mb sync, and interleaving so bad that my pings are 35ms to bbc.co.uk.

BT won't accept my speed being 18-20meg under my estimate as reason to terminate, they won't reset the DLM, they are utterly useless, I feel their customer service is almost criminal to be honest.

Anyway, given my line stats (details attached) how long will it take to recover, if it ever does? Are there any other issues (error rates etc) I should be concerned with?

Thanks in advance for any help.

http://i.imgur.com/7cZdrDq.png

DSLAM/MSAN type: BDCM:0xa415 / v0xa415
DSL mode: VDSL2
Status: Showtime
Uptime: 8 hours 40 min 41 sec

Downstream Upstream
Attenuation (dB):
Connection speed (kbps): 60908 18999
SNR margin (dB): 9.1 10.9
Power (dBm): 12.4 6.6
Interleave depth: 1341 674
INP: 4.00 4.00

RSCorr/RS (%): 0.0079 5.3232
RSUnCorr/RS (%): 0.0000 0.0000
ES/hour: 0 0


xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 31379 Kbps, Downstream rate = 89604 Kbps
Path: 0, Upstream rate = 18999 Kbps, Downstream rate = 60908 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 9.1 10.9
Attn(dB): 0.0 0.0
Pwr(dBm): 12.4 6.6
VDSL2 framing
Path 0
B: 39 26
M: 1 1
T: 64 64
R: 16 10
S: 0.0209 0.0451
L: 21443 6557
D: 1341 674
I: 56 37
N: 56 37
Counters
Path 0
OHF: 23294226 2867403
OHFErr: 25 8
RS: 1668354027 610849
RSCorr: 130847 120600
RSUnCorr: 613 0

Path 0
HEC: 132 0
OCD: 0 0
LCD: 0 0
Total Cells: 3662551336 0
Data Cells: 12458928 0
Drop Cells: 0
Bit Errors: 0 0

ES: 33 13
SES: 5 0
UAS: 36 36
AS: 31272

Path 0
INP: 4.00 4.00
PER: 1.33 5.05
delay: 7.00 8.00
OR: 119.65 66.45

Bitswap: 198 226

Total time = 1 days 6 hours 33 min 47 sec
FEC: 568128 389476
CRC: 4042 31
ES: 33 13
SES: 5 0
UAS: 36 36
LOS: 5 0
LOF: 5 0
Latest 15 minutes time = 3 min 47 sec
FEC: 919 62
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 26 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Latest 1 day time = 6 hours 33 min 47 sec
FEC: 28613 13880
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 539515 375596
CRC: 4042 31
ES: 33 13
SES: 5 0
UAS: 36 36
LOS: 5 0
LOF: 5 0
Since Link time = 8 hours 41 min 11 sec
FEC: 130847 120600
CRC: 25 8
ES: 4 4
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
#
Standard User adslmax
(knowledge is power) Sun 23-Feb-14 01:01:22
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Re: How long for this line to recover?


[re: nemeth782] [link to this post]
 
In reply to a post by nemeth782:
The HomeHub5 is utterly useless and reboots constantly


I agree with you. That's why I get rid of it and went back with BTO Modem with my own router, it now stable for nearly 7 days. Thankful the DLM haven't kicked in on mine.

plusnetFTTC72 Meg

Edited by adslmax (Sun 23-Feb-14 01:03:51)

Standard User tommy45
(knowledge is power) Sun 23-Feb-14 01:20:07
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Re: How long for this line to recover?


[re: nemeth782] [link to this post]
 
IMO if they supplied the hh5 and it is faulty in some way, and this has caused DLM to reduce the sync and apply lag (interleave) then they should be prepare to submit a request to openreach for a dlm reset, and supply you with a bt openreach modem if that means a engineer visit(to install modem ) so be it

Their customer support is poor, maybe writing a formal letter of complaint to their complaints manager, maybe the way forward, if that fails then you could always try their ADR if you wanted out penalty free , if they refuse to help you


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Standard User adslmax
(knowledge is power) Sun 23-Feb-14 01:58:15
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Re: How long for this line to recover?


[re: tommy45] [link to this post]
 
tommy45 is correct. Don't let BT get away with it. Fight Back!

plusnetFTTC72 Meg
Standard User WWWombat
(fountain of knowledge) Sun 23-Feb-14 03:07:51
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Re: How long for this line to recover?


[re: nemeth782] [link to this post]
 
The basic level of FEC and interleaving used to be specified by DLM setting "INP" to 3 symbols and "delay" to 8ms. Yours is set to 4 symbols and 7ms; the latter is a value I've only ever seen in the last couple of days, so perhaps they have some new settings.

The 7ms delay is quite low, so interleaving hasn't totally destroyed your latency. You should also expect that, when DLM removes the FEC and interleaving, the attainable will drop at the same time as your actual speed increasing.

If the HH5 was indeed the sole cause of DLM intervention, then the usual time to remove intervention is 2-3 weeks. If you aren't on the most basic level, intervention may be reduced in stages.
Standard User lexden16
(member) Sun 23-Feb-14 08:56:29
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Re: How long for this line to recover?


[re: WWWombat] [link to this post]
 
In reply to a post by WWWombat:
The basic level of FEC and interleaving used to be specified by DLM setting "INP" to 3 symbols and "delay" to 8ms. Yours is set to 4 symbols and 7ms; the latter is a value I've only ever seen in the last couple of days, so perhaps they have some new settings.


INP of 3 on my modem is normally associated with interleaving. I am currently running on INP of 0 (up and down), latency - fast (up and down). I agree though that DLM has a hair trigger and it can take 2 to 3 weeks to resolve once it no longer detects the disturbance.
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