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2013 Stats:
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 13813 Kbps, Downstream rate = 64968 Kbps
Path: 0, Upstream rate = 13847 Kbps, Downstream rate = 64067 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): 6.3 6.0
Attn(dB): 0.0 0.0
Pwr(dBm): 13.9 6.8
VDSL2 framing
Path 0
B: 239 237
M: 1 1
T: 21 62
R: 0 16
S: 0.1192 0.5467
L: 16105 3717
D: 1 1
I: 240 127
N: 240 254
Counters
Path 0
OHF: 377185 83960
OHFErr: 146 0
RS: 0 909379
RSCorr: 0 0
RSUnCorr: 0 0
Path 0
HEC: 14 0
OCD: 0 0
LCD: 0 0
Total Cells: 87556875 0
Data Cells: 10637 0
Drop Cells: 0
Bit Errors: 0 0
ES: 2 0
SES: 0 0
UAS: 18 18
AS: 713
Path 0
INP: 0.00 0.00
PER: 1.87 8.47
delay: 0.00 0.00
OR: 102.25 30.21
Bitswap: 105 45
#
2017 Stats with faceplate removed:
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 16400 Kbps, Downstream rate = 58032 Kbps
Bearer: 0, Upstream rate = 14991 Kbps, Downstream rate = 53999 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): 7.4 5.9
Attn(dB): 16.8 0.0
Pwr(dBm): 13.9 6.9
VDSL2 framing
Bearer 0
MSGc: -6 29
B: 158 47
M: 1 1
T: 0 64
R: 10 2
S: 0.0935 0.1018
L: 14456 3928
D: 16 1
I: 169 50
N: 169 50
Q: 16 0
V: 7 0
RxQueue: 33 0
TxQueue: 11 0
G.INP Framing: 18 0
G.INP lookback: 11 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 21249
OHFErr: 0 0
RS: 7327680 2503025
RSCorr: 14840 0
RSUnCorr: 0 0
Bearer 1
OHF: 10770 0
OHFErr: 0 0
RS: 85665 0
RSCorr: 0 0
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 423 0
rtx_c: 0 0
rtx_uc: 0 0
G.INP Counters
LEFTRS: 0 0
minEFTR: 54001 0
errFreeBits: 142492 0
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 17925684 0
Data Cells: 422 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 0
SES: 0 0
UAS: 27 27
AS: 173
Bearer 0
INP: 47.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 8.17
OR: 0.01 34.23
AgR: 54190.77 15024.82
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: 0/0 12/12
Total time = 3 min 20 sec
FEC: 14840 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 27 27
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 3 min 20 sec
FEC: 14840 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 27 27
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 0 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
Latest 1 day time = 3 min 20 sec
FEC: 14840 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 27 27
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 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
Since Link time = 2 min 53 sec
FEC: 14840 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Nearly a 11 mbps difference over 4 years! Can anyone offer any insight into why this could be the case from looking at the two statistics provided above?
TIA!
Edited by Bobby_Valentino (Tue 04-Apr-17 14:37:58)
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I would say a combination of crosstalk and due to instability on the line, downstream banding. To get the banding removed, you'll need to organise a broadband boost engineer with your ISP.
Edited by deleted (Tue 04-Apr-17 14:35:39)
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As you say, it looks like banding, but a boost engineer doesn't look appropriate to me at this stage, given the interleaving depth of 16 on G.INP rather than the default 8. I'd like to see those error stats after a while to see what is upsetting DLM. Both sets were taken very soon after reboots of the modem.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 63790/13596Kbps @ 600m. BQMs - IPv4 & IPv6
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Register (or login) on our website and you will not see this ad.
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That's a point and I didn't spot that, Bob. I was commenting on why the speeds had dropped. But, yes maybe a SFI engineer would be more appropriate so they could see what is causing the problem and then once they've fixed it, they can reset the DLM.
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Interestingly, something I've only just noticed, the Bearer 1 depth is 1, (Fast Path) where I think we usually see 3.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 63790/13596Kbps @ 600m. BQMs - IPv4 & IPv6
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Hmm, I've had upstream G.INP with interleaver depth of 1.
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You are talking about Bearer 0. I'm talking about Bearer 1 downstream.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 63790/13596Kbps @ 600m. BQMs - IPv4 & IPv6
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I was talking about my connection not the OP's. 
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I suspect an SFI engineer would say line is within tolerance and the visit would be chargeable as no fault found. BT won't do visits when there is essentially no visible fault - loss of speed through crosstalk is normal and BT will not hunt down minor issues on lines.
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Permanent banding isn't common though Ian. So far as we know, that is. Especially with an interleaving depth of 16. New stats each 24 hours for three to four days are needed so we can see the error rates. Better still, some monitoring such as DSLStats and MyDSLStats.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 63790/13596Kbps @ 600m. BQMs - IPv4 & IPv6
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Yes, but as the downstream rate is banded, then there has to be an underlying issue somewhere.
Edited by deleted (Wed 05-Apr-17 09:21:07)
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I wouldn't say isn't common. Automatic banding removal is becoming rarer. So, that's why I was quick to book a broadband boost engineer after my telephony fault was fixed.
Edited by deleted (Wed 05-Apr-17 09:23:13)
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And gained 133kbps.
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Atm yes, but you watch, it'll increase. Are you aware of G.INP on VDSL? It's currently not active on my line because of the DLM reset. My line was syncing at nearly 48000/8700 Kbps before the issue.
Edited by deleted (Wed 05-Apr-17 10:17:12)
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And if the line fault has been fixed, DLM would lift the band and apply G.INP if it deemed necessary.
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Yes, but I needed a DLM reset anyway, because on my line particularly, banding doesn't remove itself automatically. What you've said should happen, but it doesn't on a lot of lines.
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Usually because they fall into the amber category due to errors.
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Understood.
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As you say, it looks like banding, but a boost engineer doesn't look appropriate to me at this stage, given the interleaving depth of 16 on G.INP rather than the default 8. I'd like to see those error stats after a while to see what is upsetting DLM. Both sets were taken very soon after reboots of the modem.
These are the stats since I posted the initial stat's in the thread.
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 16355 Kbps, Downstream rate = 56912 Kbps
Bearer: 0, Upstream rate = 14991 Kbps, Downstream rate = 53999 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): 7.1 5.7
Attn(dB): 16.8 0.0
Pwr(dBm): 14.0 6.9
VDSL2 framing
Bearer 0
MSGc: -6 29
B: 158 47
M: 1 1
T: 0 64
R: 10 2
S: 0.0935 0.1018
L: 14456 3928
D: 16 1
I: 169 50
N: 169 50
Q: 16 0
V: 7 0
RxQueue: 33 0
TxQueue: 11 0
G.INP Framing: 18 0
G.INP lookback: 11 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 1388139
OHFErr: 0 1490
RS: 2606375760 2513495
RSCorr: 16267682 5896
RSUnCorr: 0 0
Bearer 1
OHF: 22637945 0
OHFErr: 0 0
RS: 181103066 0
RSCorr: 2 0
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 501 0
rtx_c: 77 0
rtx_uc: 0 0
G.INP Counters
LEFTRS: 0 0
minEFTR: 53981 0
errFreeBits: 299498200 0
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 3400312087 0
Data Cells: 366476051 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 1330
SES: 0 4
UAS: 27 27
AS: 363628
Bearer 0
INP: 47.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 8.17
OR: 0.01 34.23
AgR: 54190.77 15024.82
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: 81699/81699 28102/28102
Total time = 1 days 5 hours 55 sec
FEC: 16267682 5896
CRC: 0 1490
ES: 0 1330
SES: 0 4
UAS: 27 27
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 55 sec
FEC: 56 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: 936 305
CRC: 0 72
ES: 0 35
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 5 hours 55 sec
FEC: 31683 648
CRC: 0 166
ES: 0 119
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 2302019 1165
CRC: 0 305
ES: 0 270
SES: 0 1
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 4 days 5 hours 27 sec
FEC: 16267682 5896
CRC: 0 1490
ES: 0 1330
SES: 0 4
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
What do you people make of the latest (4 days) worth of statistics shown above?
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Tbh, I can't see much wrong there, 0 errors on the downstream and normal amounts of errors on the upstream. Whatever caused DLM to intervene was harsh but brief. Let's hope DLM removes the banding. If it doesn't within a month, then try and book a broadband boost engineer.
Edited by deleted (Sat 08-Apr-17 18:51:14)
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Post deleted by Bobby_Valentino
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Tbh, I can't see much wrong there, 0 errors on the downstream and normal amounts of errors on the upstream. Whatever caused DLM to intervene was harsh but brief. Let's hope DLM removes the banding. If it doesn't within a month, then try and book a broadband boost engineer.
I think it's a stuck DLM profile or something. I've had the same BRAS IP profile rate for the past 2 years now. I've only bothered looking into the issue now as I had free time, but I want to go back to the speeds I used to have! Do I just ask my ISP to reset the DLM?
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It's a tough one. I would say yes, but is there a fault there? No. So, I'd suggest, seen as you've been very patient (a lot more than myself), to go for it! But, don't expect it to go perfectly... Good luck!
Edited by deleted (Sat 08-Apr-17 19:49:10)
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Between 2013 and 2017 I lost 34Mb of attainable with no issues and now 43Mb. Crosstalk can have a huge impact. You haven't fared too badly if that's all you have lost.
I'm not sure you are banded either. I am definitely banded on one line, at 55Mb with lots of SNR margin to spare. It seems odd to me for there to be banding at 55Mb and 54Mb.
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Because the modem connects at the same downstream rate!
Edited by deleted (Sun 09-Apr-17 09:03:05)
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Because the modem connects at the same downstream rate!
I only see a single sync period - the line had been up for over 4 days when the second stats sample was provided, no intermediate resync.
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Updates FTTC statistics (25th April):
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 16363 Kbps, Downstream rate = 57136 Kbps
Bearer: 0, Upstream rate = 14991 Kbps, Downstream rate = 53999 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): 7.2 5.8
Attn(dB): 16.8 0.0
Pwr(dBm): 13.9 7.0
VDSL2 framing
Bearer 0
MSGc: -6 29
B: 158 47
M: 1 1
T: 0 64
R: 10 2
S: 0.0935 0.1018
L: 14456 3928
D: 16 1
I: 169 50
N: 169 50
Q: 16 0
V: 7 0
RxQueue: 33 0
TxQueue: 11 0
G.INP Framing: 18 0
G.INP lookback: 11 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 418744
OHFErr: 0 7740
RS: 742990320 3772497
RSCorr: 64728813 33208
RSUnCorr: 0 0
Bearer 1
OHF: 114060451 0
OHFErr: 0 0
RS: 912483112 0
RSCorr: 15 0
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 3854 0
rtx_c: 3406 0
rtx_uc: 0 0
G.INP Counters
LEFTRS: 5 0
minEFTR: 54001 0
errFreeBits: 1509008732 0
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 1274097439 0
Data Cells: 1273302185 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 6875
SES: 0 15
UAS: 27 27
AS: 1832129
Bearer 0
INP: 47.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 8.17
OR: 0.01 34.23
AgR: 54190.77 15024.82
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: 502905/502905 137299/137299
Total time = 1 days 4 hours 55 min 56 sec
FEC: 64728813 33208
CRC: 0 7740
ES: 0 6875
SES: 0 15
UAS: 27 27
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 10 min 56 sec
FEC: 1611 5
CRC: 0 2
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 1930 5
CRC: 0 2
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 4 hours 55 min 56 sec
FEC: 36877 188
CRC: 0 54
ES: 0 50
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 218305 1336
CRC: 0 319
ES: 0 289
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 21 days 4 hours 55 min 27 sec
FEC: 64728813 33208
CRC: 0 7740
ES: 0 6875
SES: 0 15
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
What do you all make of this since I first posted?
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Your sync speed has been capped to raise the snrm due to line problems. Since BT lost the Assia case their implementation of DLM has become more reluctant to remove banding.
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Your sync speed has been capped to raise the snrm due to line problems. Since BT lost the Assia case their implementation of DLM has become more reluctant to remove banding.
Wouldn't have this problem if we killed off DLM once & for all... (Hopefully someone else will find an infringing patent and try again  )
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