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15db target... again
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- Re: 15db target... again
15db target... again
25-02-2016 9:21 PM
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Hi,
Since asking for interleaving to be enabled DLM has continued to increase my target margin despite relatively low error rates (less than 100 per day). It's now at 15db and of course the sync speed is low.
Could CRT please check and confirm the DLM stability option on my line? It needs to be Standard to prevent DLM being too aggressive.
Also, could the MTBE and ILQ please be provided - which may help explain why DLM is being so aggressive.
Thanks in advance.
JG
Since asking for interleaving to be enabled DLM has continued to increase my target margin despite relatively low error rates (less than 100 per day). It's now at 15db and of course the sync speed is low.
Could CRT please check and confirm the DLM stability option on my line? It needs to be Standard to prevent DLM being too aggressive.
Also, could the MTBE and ILQ please be provided - which may help explain why DLM is being so aggressive.
Thanks in advance.
JG
Message 1 of 7
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6 REPLIES 6
Re: 15db target... again
26-02-2016 2:59 PM
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Got this resolved on live chat.
Please pass on my thanks to the agent who dealt with it, although you may want to clarify to him that DLM upping the margin does indeed cause a resync
Thanks,
jg321
Please pass on my thanks to the agent who dealt with it, although you may want to clarify to him that DLM upping the margin does indeed cause a resync
Thanks,
jg321
Message 2 of 7
(801 Views)
Re: 15db target... again
26-02-2016 4:36 PM
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Can I ask why it raised to this target, had to be a good reason..... For months now it has giving me a solid 15db...... Had 6db for over a year and a half..... Unless this is a marketing trick by plusnet, fixing the DLM to set the SNR at a specific level.
Not sure what is going on, I left it at 15 as I couldn't be bothered with people blaming my end, as they tend to do.
Just curious, has it stayed at the SNR after the reset?
Not sure what is going on, I left it at 15 as I couldn't be bothered with people blaming my end, as they tend to do.
Just curious, has it stayed at the SNR after the reset?
Message 3 of 7
(801 Views)
Re: 15db target... again
26-02-2016 7:51 PM
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I honestly don't know, it seems to go through periods of getting upset and upping the SNR. Voice line is clear, connection is stable and doesn't drop. Throughput is absolutely fine, so I can't see any reason.
Current stats:
Mode: ADSL2+
Channel: Fast <-- this is a lie!
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.9 10.2
Attn(dB): 40.5 19.7
Pwr(dBm): 0.0 13.0
Max(Kbps): 11292 888
Rate (Kbps): 9507 888
INP: 1.00 2.00
PER: 16.24 18.00
delay: 7.99 8.00
OR: 32.01 7.11
Bitswap: 1475 0
Previous experience has shown that the 6dB target probably won't stick. If/when it starts increasing, I'll try forcing to ADSL1 (G.DMT) to see if this helps. I'll keep you posted
I would add a speed-test result but currently still have a Plusnet profile of 5.1Mbps.
Edit to add KBD test results from live chat:
xDSL Status Test Summary
Sync Status: Circuit In Sync
General Information
NTE Status: NTE Power Status: PowerOn Bypass Status:
Upstream DSL Link Information Downstream DSL Link Information
Loop Loss: 19.6 40.5
SNR Margin: 11.0 15.8
Errored Seconds: 0 0
HEC Errors: 0
Cell Count: 5349820 1507956
Speed: 888 5838
Maximum Stable Rate (KBPS): 7968 Fault Threshold Rate (KBPS): 6374
Mean Time Between Retrains (Seconds): 86400 Mean Time Between Errors Upstream (Seconds): 21600
Indicative Line Quality: G Mean Time Between Errors Downstream (Seconds): 452
Current stats:
Mode: ADSL2+
Channel: Fast <-- this is a lie!
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.9 10.2
Attn(dB): 40.5 19.7
Pwr(dBm): 0.0 13.0
Max(Kbps): 11292 888
Rate (Kbps): 9507 888
INP: 1.00 2.00
PER: 16.24 18.00
delay: 7.99 8.00
OR: 32.01 7.11
Bitswap: 1475 0
Previous experience has shown that the 6dB target probably won't stick. If/when it starts increasing, I'll try forcing to ADSL1 (G.DMT) to see if this helps. I'll keep you posted
I would add a speed-test result but currently still have a Plusnet profile of 5.1Mbps.
Edit to add KBD test results from live chat:
xDSL Status Test Summary
Sync Status: Circuit In Sync
General Information
NTE Status: NTE Power Status: PowerOn Bypass Status:
Upstream DSL Link Information Downstream DSL Link Information
Loop Loss: 19.6 40.5
SNR Margin: 11.0 15.8
Errored Seconds: 0 0
HEC Errors: 0
Cell Count: 5349820 1507956
Speed: 888 5838
Maximum Stable Rate (KBPS): 7968 Fault Threshold Rate (KBPS): 6374
Mean Time Between Retrains (Seconds): 86400 Mean Time Between Errors Upstream (Seconds): 21600
Indicative Line Quality: G Mean Time Between Errors Downstream (Seconds): 452
Message 4 of 7
(801 Views)
Re: 15db target... again
26-02-2016 9:37 PM
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OK errors were racking up pretty rapidly on ADSL2+ at 6dB, so I decided to act sooner rather than later and force ADSL1:
# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 0
Channel: INTR, Upstream rate = 1056 Kbps, Downstream rate = 8064 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 8.5 7.0
Attn(dB): 38.0 19.5
Pwr(dBm): 19.8 12.6
Max(Kbps): 8864 1236
Rate (Kbps): 8064 1056
G.dmt framing
K: 253(0) 34
R: 2 8
S: 1 4
😧 32 8
ADSL2 framing
MSGc: 1 1
B: 253 34
M: 1 4
T: 1 1
R: 2 8
S: 1.0078 4.2285
L: 2032 280
😧 32 8
Counters
SF: 5073 5013
SFErr: 2 0
RS: 344994 85221
RSCorr: 81 0
RSUnCorr: 1 0
HEC: 2 0
OCD: 0 0
LCD: 0 0
Total Cells: 1640800 0
Data Cells: 14936 0
Drop Cells: 0
Bit Errors: 0 0
ES: 2 0
SES: 0 0
UAS: 12 0
AS: 86
INP: 0.12 0.91
PER: 1.76 1.85
delay: 8.06 8.45
OR: 31.75 30.27
Bitswap: 0 0
Total time = 1 min 48 sec
SF = 5073
CRC = 2
LOS = 0
LOF = 0
ES = 2
Latest 1 day time = 1 min 48 sec
SF = 5073
CRC = 2
LOS = 0
LOF = 0
ES = 2
Latest 15 minutes time = 1 min 48 sec
SF = 5073
CRC = 2
LOS = 0
LOF = 0
ES = 2
Previous 15 minutes time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Showtime Drop Reason: 0
Last Retrain Reason: 0
#
Will keep an eye on it. Even if DLM ups the target to 9dB I'll still be able to get close to 8 meg sync which I'll be happy with if it stays there.
I'll keep this updated.
# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 0
Channel: INTR, Upstream rate = 1056 Kbps, Downstream rate = 8064 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 8.5 7.0
Attn(dB): 38.0 19.5
Pwr(dBm): 19.8 12.6
Max(Kbps): 8864 1236
Rate (Kbps): 8064 1056
G.dmt framing
K: 253(0) 34
R: 2 8
S: 1 4
😧 32 8
ADSL2 framing
MSGc: 1 1
B: 253 34
M: 1 4
T: 1 1
R: 2 8
S: 1.0078 4.2285
L: 2032 280
😧 32 8
Counters
SF: 5073 5013
SFErr: 2 0
RS: 344994 85221
RSCorr: 81 0
RSUnCorr: 1 0
HEC: 2 0
OCD: 0 0
LCD: 0 0
Total Cells: 1640800 0
Data Cells: 14936 0
Drop Cells: 0
Bit Errors: 0 0
ES: 2 0
SES: 0 0
UAS: 12 0
AS: 86
INP: 0.12 0.91
PER: 1.76 1.85
delay: 8.06 8.45
OR: 31.75 30.27
Bitswap: 0 0
Total time = 1 min 48 sec
SF = 5073
CRC = 2
LOS = 0
LOF = 0
ES = 2
Latest 1 day time = 1 min 48 sec
SF = 5073
CRC = 2
LOS = 0
LOF = 0
ES = 2
Latest 15 minutes time = 1 min 48 sec
SF = 5073
CRC = 2
LOS = 0
LOF = 0
ES = 2
Previous 15 minutes time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Showtime Drop Reason: 0
Last Retrain Reason: 0
#
Will keep an eye on it. Even if DLM ups the target to 9dB I'll still be able to get close to 8 meg sync which I'll be happy with if it stays there.
I'll keep this updated.
Message 5 of 7
(801 Views)
Re: 15db target... again
27-02-2016 10:04 AM
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Put the 582n back on the line in the early hours, still forced down to ADSL1:
DSL Connection
Link Information
Uptime: 0 days, 9:08:58
DSL Type: ITU-T G.992.1
Bandwidth (Up/Down) [kbps/kbps]: 1.056 / 8.064
Data Transferred (Sent/Received) [MB/MB]: 15,40 / 169,26
Output Power (Up/Down) [dBm]: 12,7 / 19,9
Line Attenuation (Up/Down) [dB]: 21,5 / 35,5
SN Margin (Up/Down) [dB]: 7,0 / 9,4
System Vendor ID (Local/Remote): TMMB / ----
Chipset Vendor ID (Local/Remote): BDCM / IFTN
Loss of Framing (Local/Remote): 0 / -
Loss of Signal (Local/Remote): 0 / -
Loss of Power (Local/Remote): 0 / -
Loss of Link (Remote): -
Error Seconds (Local/Remote): 326 / -
FEC Errors (Up/Down): 19 / 11.379
CRC Errors (Up/Down): 6 / 444
HEC Errors (Up/Down): - / 444 / 2.430
Lets see how this gets on. I'll not change anything else now.
DSL Connection
Link Information
Uptime: 0 days, 9:08:58
DSL Type: ITU-T G.992.1
Bandwidth (Up/Down) [kbps/kbps]: 1.056 / 8.064
Data Transferred (Sent/Received) [MB/MB]: 15,40 / 169,26
Output Power (Up/Down) [dBm]: 12,7 / 19,9
Line Attenuation (Up/Down) [dB]: 21,5 / 35,5
SN Margin (Up/Down) [dB]: 7,0 / 9,4
System Vendor ID (Local/Remote): TMMB / ----
Chipset Vendor ID (Local/Remote): BDCM / IFTN
Loss of Framing (Local/Remote): 0 / -
Loss of Signal (Local/Remote): 0 / -
Loss of Power (Local/Remote): 0 / -
Loss of Link (Remote): -
Error Seconds (Local/Remote): 326 / -
FEC Errors (Up/Down): 19 / 11.379
CRC Errors (Up/Down): 6 / 444
HEC Errors (Up/Down): - / 444 / 2.430
Lets see how this gets on. I'll not change anything else now.
Message 6 of 7
(801 Views)
Re: 15db target... again
27-02-2016 10:21 AM
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I was with Be Un Limited before PN. I know Be used their own DSLAMs, which wasn't really reliant on their DLM, I could hold a 3.5db for months - maybe it was racking up errors but at least I had over 1Mb/s.
Thing is, unless I fork out £30k to get my cabinet upgraded to FTTC, due to there are only ~40 premises connected, I'm stuck.
Can't even get VM, due to the above reason. Not that I'd want to anyway.
Thing is, unless I fork out £30k to get my cabinet upgraded to FTTC, due to there are only ~40 premises connected, I'm stuck.
Can't even get VM, due to the above reason. Not that I'd want to anyway.
Message 7 of 7
(801 Views)
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