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Author Topic: Revamped line after Openreach engineer visit  (Read 577 times)

hushcoden

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Revamped line after Openreach engineer visit
« on: March 03, 2020, 12:55:26 PM »

My new ISP Zen agreed to send an OR engineer to check why my line didn't reach the expected speed (according to their remote tests my line was able to sync at 70-71 Mbs, while the actual speed was 63.8 Mbs).

Long story short, the engineer after a couple of hours, said that he had to replace the old socket with a NTE5C and he advised me to disconnect the wires that were bringing the phone line to my bedroom (and I said yes) in order to have only the wires going to my living room.

At the end, you can see in the 'line_new' picture, I gained a few Mb and I also see less CRC and ES, so happy days.

Now, the engineer will report back that there was nothing wrong with the 'external' line, then Zen will want to charge me: fine by me, but I wanted the opinion of the expert users in this forum to understand (the two pictures shows my line status before and after the engineer visit) whether the problem was really just the fact the I had wires also in the bedroom and by disconnecting them the engineer fixed the line ??

Or there is something else, and in case I can dissent from the charge...
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mrk26

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Re: Revamped line after Openreach engineer visit
« Reply #1 on: March 03, 2020, 01:10:18 PM »

This is absolutely correct, I have similar situation in my house. Like three extensions connected to master socket. After I disconnected all and fit dsl plate (same as yours), I connected only one pair unfiltered which going to my modem and one pair filtered to my phone socket. Since then my line became damn stable and speed jumped like 10Mb plus. No more hundreds thousands of FECs, thousands of CRC etc. I don't even need to check stats now on my line.  :cool:
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PhilipD

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Re: Revamped line after Openreach engineer visit
« Reply #2 on: March 03, 2020, 01:31:13 PM »

Hi

Quite possible the extra wires were causing an issue plus dependant on how they were wired into the master socket.  If they changed the master socket though that is BT's remit so I suspect the engineer will mark it down as a faulty master socket to save you being charged, in reality it was probably just the extra wiring.

Regards

Phil

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Alex Atkin UK

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Re: Revamped line after Openreach engineer visit
« Reply #3 on: March 03, 2020, 03:49:15 PM »

This is basically what happened when I disconnected the bell wire from a friends extensions.
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Exchange: INTAKE (ECI DSLAM) Router: pfSense (i5-7200U) ISP/Modems: Zen (Home Hub 5A running OpenWrt) + Plusnet (VMG-3925-B10B) WiFi: Ubiquiti nanoHD

hushcoden

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Re: Revamped line after Openreach engineer visit
« Reply #4 on: March 07, 2020, 09:11:51 AM »

A quick update: finally I have a fastpath line, good stuff, my ECI line seems performing very well, so fingers crossed it will stay stable  :fingers:

Out of curiosity, I had a resync probably yesterday when the line moved to fastpath, and the attainable changed from 85Mbs to 78Mbs, is it a normal behaviour ?

Code: [Select]
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 27191 Kbps, Downstream rate = 78275 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 78204 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 9.4
Attn(dB): 12.7 0.0
Pwr(dBm): -0.6 -0.7

VDSL2 framing
Bearer 0
MSGc: 18 150
B: 239 236
M: 1 1
T: 23 5
R: 0 16
S: 0.0977 0.3771
L: 19656 5410
D: 1 1
I: 240 255
N: 240 255

Counters
Bearer 0
OHF: 68627036 2521530
OHFErr: 1745 29
RS: 0 3193440
RSCorr: 0 357
RSUnCorr: 0 0

Bearer 0
HEC: 1890 0
OCD: 0 0
LCD: 0 0
Total Cells: 278846734 0
Data Cells: 50092798 0
Drop Cells: 0
Bit Errors: 0 0

ES: 2511 674
SES: 124 60
UAS: 3895 3806
AS: 116108

Bearer 0
INP: 0.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 1.69 6.15
OR: 113.50 202.87
AgR: 78318.07 20203.27

Bitswap: 69/69 2/2

Total time = 10 days 2 hours 26 min 29 sec
FEC: 0 357
CRC: 1745 29
ES: 2511 674
SES: 124 60
UAS: 3895 3806
LOS: 3 0
LOF: 22 0
LOM: 13 0
Latest 15 minutes time = 11 min 29 sec
FEC: 0 0
CRC: 9 0
ES: 6 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: 0 0
CRC: 7 0
ES: 5 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 2 hours 26 min 29 sec
FEC: 0 13
CRC: 124 1
ES: 82 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 0 341
CRC: 1411 28
ES: 896 28
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 1 days 8 hours 15 min 7 sec
FEC: 0 357
CRC: 1745 29
ES: 1107 29
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

Like I said, I couldn't be happier, it's just to me to understand how these things work...

Tia.
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ktz392837

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  • Posts: 502
Re: Revamped line after Openreach engineer visit
« Reply #5 on: March 07, 2020, 09:25:00 AM »

When you are on an interleaved connection the max attainable figure gets calculated wrongly and is always way too high on any modem I have experienced.  So yes it is normal.  If you are on fast path the max attainable is usually a good indication.
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mrk26

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  • Posts: 170
Re: Revamped line after Openreach engineer visit
« Reply #6 on: March 07, 2020, 09:34:04 AM »

A quick update: finally I have a fastpath line, good stuff, my ECI line seems performing very well, so fingers crossed it will stay stable  :fingers:

Out of curiosity, I had a resync probably yesterday when the line moved to fastpath, and the attainable changed from 85Mbs to 78Mbs, is it a normal behaviour ?

Code: [Select]
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 27191 Kbps, Downstream rate = 78275 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 78204 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 9.4
Attn(dB): 12.7 0.0
Pwr(dBm): -0.6 -0.7

VDSL2 framing
Bearer 0
MSGc: 18 150
B: 239 236
M: 1 1
T: 23 5
R: 0 16
S: 0.0977 0.3771
L: 19656 5410
D: 1 1
I: 240 255
N: 240 255

Counters
Bearer 0
OHF: 68627036 2521530
OHFErr: 1745 29
RS: 0 3193440
RSCorr: 0 357
RSUnCorr: 0 0

Bearer 0
HEC: 1890 0
OCD: 0 0
LCD: 0 0
Total Cells: 278846734 0
Data Cells: 50092798 0
Drop Cells: 0
Bit Errors: 0 0

ES: 2511 674
SES: 124 60
UAS: 3895 3806
AS: 116108

Bearer 0
INP: 0.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 1.69 6.15
OR: 113.50 202.87
AgR: 78318.07 20203.27

Bitswap: 69/69 2/2

Total time = 10 days 2 hours 26 min 29 sec
FEC: 0 357
CRC: 1745 29
ES: 2511 674
SES: 124 60
UAS: 3895 3806
LOS: 3 0
LOF: 22 0
LOM: 13 0
Latest 15 minutes time = 11 min 29 sec
FEC: 0 0
CRC: 9 0
ES: 6 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: 0 0
CRC: 7 0
ES: 5 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 2 hours 26 min 29 sec
FEC: 0 13
CRC: 124 1
ES: 82 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 0 341
CRC: 1411 28
ES: 896 28
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 1 days 8 hours 15 min 7 sec
FEC: 0 357
CRC: 1745 29
ES: 1107 29
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

Like I said, I couldn't be happier, it's just to me to understand how these things work...

Tia.
I have 84Mb on interleave, on fastpath 77-78Mb, so yours seems to be right.
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N0STIE

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  • Posts: 363
Re: Revamped line after Openreach engineer visit
« Reply #7 on: March 10, 2020, 01:31:35 AM »

Yes, when interleaved, attainable is around 8-9mb higher. I was seeing 106k when interleaved, now around 97/98k

Line Status:
Connected
DSL Up Time:
0 days 22 hours 37 minutes
DSL Modulation Type:
VDSL2
Annex Type:
Annex A/L
Upstream   Downstream
Current Rate (kbps)   20000   79987
Max Rate (kbps)   25483   98456
SNR Margin (dB)   9.3   10.8
Line Attenuation (dB)   12.4   7.7
Errors (pkts)   36   12799
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anything