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Standard User SettleJohn
(newbie) Tue 24-Jan-17 21:24:55
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Help is my line banded or capped?


[link to this post]
 
Any help and advice would be welcome, I am finding it difficult to translate the line stats and find possible causes for the poor performance of my VDSL connection, Iím on BT Infinity 2 80/20 unlimited and have been from Oct 2014 one of the first to be connected to the cabinet, this was a BT install the line was very unstable from day one with numerus dropouts throughout the day, BT eventually admitted there was a fault and Openreach repaired some faults including a new cable from the pole to house (old cable was a flat fig 8 type) we had at that time a download speed of around 55Mb that fell into the lower end of the impacted range, as it was within the range BT would not investigate further.
My question is as the line was faulty from day one and for a period after install would my line have been banded or capped and never removed. I have been downloading to mydslwebstats for a fortnight, user name Wj66 if you find time to check them out it would be very much appreciated.
ECI Cabinet with G.inp active
Approximate distance to fttc 350 Mts as the cable would run, with a ATN of 14db down and 13db up.
The power levels on the downstream seem to be low at 5.4dbm both up and down.
The SNR is stable and Errors donít seem to be extreme.
I donít really understand the QLN and HLOG graphs but have been not varied from first time I tried the HG612 shortly after install.
I donít think it is all down to crosstalk download has reduced by around 10mb from install and cabinet going live over 2 years, but you good people will now better than me, pushing 70 all this is technology is overpowering. Thanks for taking the time to read all this hope it makes sense.
(I will post the connection stats and any other info I have if it helps)

John
Standard User WilliamGrimsley
(regular) Tue 24-Jan-17 21:35:38
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Re: Help is my line banded or capped?


[re: SettleJohn] [link to this post]
 
Hi John,

Welcome to the forum.

Line stats would be great please.
Standard User SettleJohn
(newbie) Tue 24-Jan-17 21:37:41
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Re: Help is my line banded or capped?


[re: WilliamGrimsley] [link to this post]
 
Thank you William

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 17825 Kbps, Downstream rate = 46768 Kbps
Bearer: 0, Upstream rate = 17667 Kbps, Downstream rate = 44873 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.3 6.1
Attn(dB): 14.2 0.0
Pwr(dBm): 5.4 5.4
VDSL2 framing
Bearer 0
MSGc: -6 14
B: 227 238
M: 1 1
T: 0 16
R: 14 16
S: 0.1616 0.4307
L: 11980 4737
D: 1 1
I: 242 255
N: 242 255
Q: 4 0
V: 0 0
RxQueue: 78 0
TxQueue: 26 0
G.INP Framing: 18 0
G.INP lookback: 26 0
RRC bits: 0 24
Bearer 1
MSGc: 122 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 8.0000 0.0000
L: 32 0
D: 1 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 1024913
OHFErr: 0 550
RS: 525905452 1132869
RSCorr: 10846 9273
RSUnCorr: 0 0
Bearer 1
OHF: 33862910 0
OHFErr: 0 0
RS: 270902786 0
RSCorr: 16 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 3139665 0
rtx_c: 873 0
rtx_uc: 0 0

G.INP Counters
LEFTRS: 0 0
minEFTR: 44863 0
errFreeBits: 372043278 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 3989409775 0
Data Cells: 3809372624 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 332
SES: 0 5
UAS: 26 26
AS: 543930

Bearer 0
INP: 49.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 6.91
OR: 0.01 23.13
AgR: 44972.09 17690.00

Bearer 1
INP: 2.00 0.00
INPRein: 2.00 0.00
delay: 0 0
PER: 16.06 0.01
OR: 63.75 0.01
AgR: 63.75 0.01

Bitswap: 125840/126023 920/943

Total time = 1 days 7 hours 5 min 56 sec
FEC: 10846 9273
CRC: 0 550
ES: 0 332
SES: 0 5
UAS: 26 26
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 5 min 56 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 6 6
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 7 hours 5 min 56 sec
FEC: 269 243
CRC: 0 22
ES: 0 19
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 654 566
CRC: 0 48
ES: 0 45
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 6 days 7 hours 5 min 29 sec
FEC: 10846 9273
CRC: 0 550
ES: 0 332
SES: 0 5
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#

Edited by SettleJohn (Tue 24-Jan-17 21:40:54)


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Standard User WilliamGrimsley
(regular) Tue 24-Jan-17 21:43:01
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Re: Help is my line banded or capped?


[re: SettleJohn] [link to this post]
 
No problem, John.

Just had a look at your line stats and I can't see anything wrong, your line isn't banded and is working to specification, however there is definitely crosstalk present, which, unfortunately, you can't remove.

Edited by WilliamGrimsley (Tue 24-Jan-17 21:44:35)

Standard User SettleJohn
(newbie) Tue 24-Jan-17 21:49:23
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Re: Help is my line banded or capped?


[re: WilliamGrimsley] [link to this post]
 
Just seams low download speed at 350mts (no more) to cabinet and a Attenuation of 14.2
Standard User WilliamGrimsley
(regular) Tue 24-Jan-17 21:54:24
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Re: Help is my line banded or capped?


[re: SettleJohn] [link to this post]
 
Yes, is your line connected to a cabinet in a built up area? Unfortunately, crosstalk can eat away at the line rate very quickly.
Standard User BatBoy
(sensei) Tue 24-Jan-17 21:55:59
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Re: Help is my line banded or capped?


[re: SettleJohn] [link to this post]
 
Can you post the estimates that www.dslchecker.bt.com returns for your line, please?
Ideally I would like to see something like this
VDSL Range A (Clean) 80 69.9 20 17 62.3 Available -- -- -- --
VDSL Range B (Impacted) 70 51.9 20 17.5 39.8 Available -- -- -- --

Edited by BatBoy (Tue 24-Jan-17 21:58:45)

Standard User SettleJohn
(newbie) Tue 24-Jan-17 21:59:08
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Re: Help is my line banded or capped?


[re: WilliamGrimsley] [link to this post]
 
Hi William thanks for taking the time to help. No not in a built-up area, a small rural area if you blink while driving through you will miss it.
Standard User WilliamGrimsley
(regular) Tue 24-Jan-17 21:59:50
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Re: Help is my line banded or capped?


[re: BatBoy] [link to this post]
 
No problem, John.

Yes, I forgot to ask, but that estimate is quite high for a line with a high amount of crosstalk on it.

Edited by WilliamGrimsley (Tue 24-Jan-17 22:00:45)

Administrator MrSaffron
(staff) Tue 24-Jan-17 22:02:54
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Re: Help is my line banded or capped?


[re: WilliamGrimsley] [link to this post]
 
How much cross talk does the line have on it then?

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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