Topic: Split From: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64% (Read 4015 times)

chuffer · « **Reply #30 on:** October 02, 2020, 04:06:19 PM »

As an aside, will a change of router ( BT HH6 to Zyxel ) create the DLM to reset ?.

underzone · « **Reply #31 on:** October 02, 2020, 04:29:46 PM »

Nope

chuffer · « **Reply #32 on:** October 16, 2020, 12:49:05 PM »

A friend on another exchange also using a ZyXel VMG8924-B10A on 240 meter cable, BT 80/20 and gets good throughput and a neat graph from the TBB tests.
https://www.thinkbroadband.com/_assets/speedtest/button/1599025110246974455.png

Compared to mine
I'm on same router, 170 meters, Plusnet 80/20.
https://www.thinkbroadband.com/_assets/speedtest/button/1602503715627564655.png

Looking at the DSL stats from both routers I noticed a great difference in the signal margins and attenuations, band status etc and his attainable rate is also higher.

Would grateful for any comments

His.
=============================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Disable
Traffic Type: PTM Mode
Link Uptime: 0 day: 20 hours: 11 minutes
============================================
VDSL Port Details Upstream Downstream
Line Rate: 19.999 Mbps 79.998 Mbps
Actual Net Data Rate: 20.000 Mbps 79.999 Mbps
Trellis Coding: ON ON
SNR Margin: 13.9 dB 5.1 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 6.4 dBm 12.7 dBm
Receive Power: -12.1 dBm -2.5 dBm
Actual INP: 48.0 symbols 55.0 symbols
Total Attenuation: 0.0 dB 15.0 dB
Attainable Net Data Rate: 32.134 Mbps 91.820 Mbps
======================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 4.1 17.7 27.3 N/A N/A 9.9 23.2 37.0
Signal Attenuation(dB): 4.1 16.9 26.7 N/A N/A 11.6 22.9 37.0
SNR Margin(dB): 13.1 13.4 14.1 N/A N/A 5.2 5.0 5.0
TX Power(dBm): -8.8 -25.9 6.3 N/A N/A 8.8 7.8 7.3
======================================================
Mine
============================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
Traffic Type: PTM Mode
Link Uptime: 2 days: 20 hours: 1 minute
===========================================
VDSL Port Details Upstream Downstream
Line Rate: 20.063 Mbps 79.998 Mbps
Actual Net Data Rate: 19.999 Mbps 79.999 Mbps
Trellis Coding: ON ON
SNR Margin: 15.5 dB 7.6 dB
Actual Delay: 0 ms 0 ms
Transmit Power: - 9.2 dBm 13.9 dBm
Receive Power: -18.5 dBm 6.5 dBm
Actual INP: 0.0 symbols 48.0 symbols
Total Attenuation: 9.1 dB 7.3 dB
Attainable Net Data Rate: 26.737 Mbps 89.234 Mbps
===================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 1.9 7.3 10.9 N/A 4.9 10.6 16.9
Signal Attenuation(dB): 1.9 6.6 10.1 N/A 5.4 10.5 16.9
SNR Margin(dB): 15.5 15.5 15.5 N/A 7.7 7.7 7.6
Transmit Power(dBm):-23.2 -35.5 - 9.5 N/A 11.3 7.7 7.1
===================================================

chuffer · « **Reply #33 on:** October 24, 2020, 11:06:02 AM »

A friend ( as above for details ) and I are now using DSLstats and there are some big differences in the data and I would appreciate any comments.

As my problem is low throughput perhaps the following rtx_tx is of interest ?.

I understand the up times will have a bearing in some of the fields.

Mine
Retransmit Counters
rtx_tx:       3899874 0
rtx_c:       6    0
rtx_uc:       0     0

Friend
Retransmit Counters
rtx_tx: 178868 105
rtx_c: 32213 172
rtx_uc: 51 136134
-----------
Mine
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 26582 Kbps, Downstream rate = 89479 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 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): 7.7 15.5
Attn(dB): 8.8 0.0
Pwr(dBm): 13.9 -9.2

VDSL2 framing
Bearer 0
MSGc: -6 26
B: 130 237
M: 1 1
T: 0 42
R: 8 16
S: 0.0000 0.3781
L: 21468 5374
D: 16 1
I: 139 127
N: 139 254
Q: 16 0
V: 14 0
RxQueue: 60 0
TxQueue: 20 0
G.INP Framing: 18 0
G.INP lookback: 20 0
RRC bits: 0 24
Bearer 1
MSGc: 186 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 5.3333 0.0000
L: 48 0
D: 3 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 2768340
OHFErr: 0 1218
RS: 3035229904 288357
RSCorr: 2981 7974
RSUnCorr: 0 0
Bearer 1
OHF: 26789353 0
OHFErr: 0 0
RS: 321471502 0
RSCorr: 6 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 3899874 0
rtx_c: 6 0
rtx_uc: 0 0

G.INP Counters
LEFTRS: 0 0
minEFTR: 79982 0
errFreeBits: 525034191 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 1775631901 0
Data Cells: 88413949 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: 0 906
SES: 0 0
UAS: 34 34
AS: 430418

Bearer 0
INP: 48.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 3.98
OR: 0.01 64.22
AgR: 80614.82 20063.54

Bearer 1
INP: 4.00 0.00
INPRein: 4.00 0.00
delay: 3 0
PER: 16.06 0.01
OR: 95.62 0.01
AgR: 95.62 0.01

Bitswap: 286/286 10892/10892

FEC: 2981 7974
CRC: 0 1218
ES: 0 906
SES: 0 0
UAS: 34 34
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 4 min 12 sec
FEC: 0 2
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: 10 13
CRC: 0 3
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 23 hours 34 min 12 sec
FEC: 634 2050
CRC: 0 245
ES: 0 168
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 640 2282
CRC: 0 274
ES: 0 201
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 4 days 23 hours 33 min 37 sec
FEC: 2981 7974
CRC: 0 1218
ES: 0 906
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

--------
The friend
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 32374 Kbps, Downstream rate = 92710 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 79999 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): 5.2 14.0
Attn(dB): 15.0 0.0
Pwr(dBm): 12.8 6.4

VDSL2 framing
Bearer 0
MSGc: -6 -6
B: 81 97
M: 1 1
T: 0 0
R: 6 8
S: 0.0000 0.0000
L: 21746 5457
D: 16 8
I: 88 106
N: 88 106
Q: 16 8
V: 10 2
RxQueue: 135 40
TxQueue: 27 10
G.INP Framing: 18 18
G.INP lookback: 27 10
RRC bits: 24 24
Bearer 1
MSGc: 186 58
B: 0 0
M: 2 2
T: 2 2
R: 16 16
S: 5.3333 16.0000
L: 48 16
D: 3 1
I: 32 32
N: 32 32
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 0
OHFErr: 31 0
RS: 3132322640 2759702
RSCorr: 4181003 3949
RSUnCorr: 0 0
Bearer 1
OHF: 36345587 845235
OHFErr: 0 0
RS: 436146304 4253358
RSCorr: 14 21
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 178868 105
rtx_c: 32213 172
rtx_uc: 51 136134

G.INP Counters
LEFTRS: 9 47
minEFTR: 80011 19997
errFreeBits: 712231565 325714127

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 3914779365 0
Data Cells: 522764348 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: 2 0
SES: 0 0
UAS: 30 30
AS: 583949

Bearer 0
INP: 55.00 48.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 0.00
OR: 0.01 0.01
AgR: 80737.89 20102.08

Bearer 1
INP: 4.00 4.00
INPRein: 4.00 4.00
delay: 3 0
PER: 16.06 16.06
OR: 95.62 31.87
AgR: 95.62 31.87

Bitswap: 43919/43919 401/401

FEC: 4181003 3949
CRC: 31 0
ES: 2 0
SES: 0 0
UAS: 30 30
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 12 min 59 sec
FEC: 209 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: 6524 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 = 18 hours 12 min 59 sec
FEC: 34910 155
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 749520 77
CRC: 13 0
ES: 1 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 6 days 18 hours 12 min 29 sec
FEC: 4181003 3949
CRC: 31 0
ES: 2 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

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Author Topic: Split From: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64% (Read 4015 times)

chuffer

Re: Split From: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%

underzone

Re: Split From: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%

chuffer

Re: Split From: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%

chuffer

Re: Split From: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%