Possible DLM resetted as my line are now banded

[#1]

Just has my email alert to say my modem resync has happen today at 11:34am after 3 days stable connected.

Before resync:

Mode 	VDSL2
Traffic Type 	PTM
Status 	Up
Link Power State 	L0
 
  	Downstream 	Upstream
Line Coding (Trellis) 	On 	On
SNR Margin (dB) 	6.4 	15.1
Attenuation (dB) 	11.9 	0.0
Output Power (dBm) 	12.5 	0.9
Attainable Rate (Kbps) 	79145 	27111
Rate (Kbps) 	        78389 	19999
Throughput speed:       74Mbps  19Mbps

After resync:

Mode 	VDSL2
Traffic Type 	PTM
Status 	Up
Link Power State 	L0
 
  	Downstream 	Upstream
Line Coding (Trellis) 	On 	On
SNR Margin (dB) 	7.3 	7.6
Attenuation (dB) 	12.0 	0.0
Output Power (dBm) 	12.5 	1.3
Attainable Rate (Kbps) 	79168 	17694
Rate (Kbps) 	        74022 	17745
Throughput speed:       50Mbps  16Mbps

I want to know why my throughput are very poor via ethernet and don't know why it capped at 50/16 from 74/19

http://www.speedtest.net/result/7566551392.png

1. Best Effort Test: -provides background information.

	Download Speed
	50.84 Mbps

0 Mbps

71.57 Mbps Max Achievable Speed

 Download speedachieved during the test was - 50.84 Mbps
 For your connection, the acceptable range of speedsis 40 Mbps-71.57 Mbps .
 Additional Information:
 IP Profile for your line is - 71.57 Mbps

2. Upstream Test: -provides background information.

	Upload Speed
	21.5 Mbps

0 Mbps

20 Mbps Max Achievable Speed

Upload speed achieved during the test was - 21.5Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 20 Mbps

modem resync at 11:34am

[#2]

I managed to force DLM to removed banded on my line via telnet to force it to removed it off. It's has successfully removed it off.

(leave my line alone DLM)

Mode 	VDSL2
Traffic Type 	PTM
Status 	Up
Link Power State 	L0
 
  	Downstream 	Upstream
Line Coding (Trellis) 	On 	On
SNR Margin (dB) 	6.4 	15.1
Attenuation (dB) 	12.0 	0.0
Output Power (dBm) 	12.5 	0.9
Attainable Rate (Kbps) 	79145 	26598
Rate (Kbps) 	        78343 	19999
Throughput speed:       73Mbps  18Mbps

 http://www.speedtest.net/result/7566780518.png

For your connection, the acceptable range of speedsis 40 Mbps-75.75 Mbps .
 Additional Information:
 IP Profile for your line is - 75.75 Mbps

[#3]

Could PN please send me GEA Test and connection log history to my ticket please thanks.

[#4]

Hi there,

I have ran some checks on your line today. Looking at the GEA, the speed is looking fine but it is showing an error on the line. Please can you try connecting to the test socket for me to rule out any internal issues. If you are connected to the test socket please let me know.

Test Outcome	Fail
Test Outcome Code	GTC_FTTC_SERVICE_1625
Description	Impairment in copper joint detected most likely in local network. Please continue to submit a trouble report
Main Fault Location	CE
Sync Status	In Sync
Downstream Speed	78.3 Mbps
Upstream Speed	20.0 Mbps
Appointment Required	N
Fault Report Advised	Y
NTE Power Status	PowerOn
Voice Line Test Result	Pass
Bridge Tap	Not Detected
Radio Frequency Ingress	Not Detected
Repetitive Electrical Impulse Noise	Not Detected
Cross Talk	Not Detected
Estimated Line Length In Metres	262.7
Upstream Rate Assessment	Very Good
Downstream Rate Assessment	Very Good
Home Wiring Problem	Not Detected
Downstream Policing Discard Rate	0.0
Customer Traffic Level	Upstream and Downstream Traffic Detected
Technology	VDSL
Profile Name	0.128M-80M Downstream, Retransmission Low - 0.128M-20M Upstream, Error Protection Off
Time Stamp	2018-08-07T15:15:00

Parameters	MIN	MAX	AVG
Down Stream Line Rate	10.0 Mbps	78.8 Mbps	77.9 Mbps
Up Stream Line Rate	9.9 Mbps	19.9 Mbps	19.8 Mbps
Up Time	0.0 Sec	900.0 Sec	886.5 Sec
Retrains	0.0	1.0	0.0

[#5]

@deank there is no errors on the line (downstream on the ES & SES)

Since Link time = 1 hours 32 min 33 sec
FEC: 30
CRC: 0
ES: 0
SES: 0
UAS: 0
LOS: 0
LOF: 0
LOM: 0

PN why is Estimated Line Length In Metres has changed below:

Before:

Estimated Line Length In Metres

243.6

Now:

Estimated Line Length In Metres

262.7

[#6]

Hi @goldenfibre

There is an error showing in the GEA above " Impairment in copper joint detected most likely in local network. Please continue to submit a trouble report ". This is most likely an external issue, however, we recommend getting it in the test socket just to rule out any internal issues.

You can find more information on how to do this here.

[#7]

@deank nothing to do with my master socket. As it never been changed since. Must be exchange or cabinet faulty.

[#8]

@deank will plug into test socket in about few minutes later. Can you please run another GEA Test in half an hour.

Updated: plugged into test socket as DSL failure to getting connecting from cabinet. DSL flashing continue.

It's a fault in the test socket now.

 Are these correctly into test socket below?

Master Socket in Test Socket

Add tags

[#9]

Updated: plugged into test socket as DSL failure to getting connecting from cabinet. DSL flashing continue.

It's a fault in the test socket now.

 Are these correctly into test socket below?

Master Socket in Test Socket

[#10]

Hi @goldenfibre

Which kind of cable are you using there? You will need to attach an ADSL filter to the socket, and plug the DSL cable into the filter. If that is a third party DSL cable you have attached to the socket, do you have an alternate one that you could try just to rule that out?

[#11]

@deank I have been to the loft try to find filter to plug into test socket, found it and it now plugged into test socket and dsl light now steady solid on. You can now run another GEA Test. This is the same cable I am using from this link: https://www.tandyonline.com/electronics/telecoms-dsl/high-speed-rj11-dsl-cable-2m.html See photo enclosed below

High Performance DSL Cable RJ11

Master Socket in Test Socket with filter

[#12]

@deank

Oh dear me! Retrain 200000 DLM more likely to banded the line overnight

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    200000
Last initialization procedure status:   0
Max:    Upstream rate = 26642 Kbps, Downstream rate = 80044 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 77616 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):        6.6             15.1
Attn(dB):        11.9            0.0
Pwr(dBm):        12.4            0.6

 For your connection, the acceptable range of speedsis 40 Mbps-75.05 Mbps .
 Additional Information:
 IP Profile for your line is - 75.05 Mbps

[#13]

Hi @goldenfibre,

I wouldn't worry to much about that as it shouldn't restrict your performance. I've ran a further test on your line and the fibre banding is currently at 80Mb as expected.

However, the Impairment in copper joint is still showing, so I have raised this to BT Wholesale for you. We expect a response from them within the next 48 hours. Please let us know if you haven't heard anything by Thursday.

[#14]

@deank Thanks. But what happen if DLM decided to banded on my line overnight, what next step or wait for hear back from BT Wholesale. Please do let me know.

[#15]

If that were to happen just let us know and we'd deal with that from our side either by getting a fault resolved or the line reset or both if appropriate. - Adam 

[#16]

@deank @adamwalker

Has the suppliers fixed my fibre broadband yet?

Last night DLM has made a change on my line. Both now enabled on interleave depth at 8/8 INP 47/47 but Bearer 0 are now re-tx high on downstream

Additional Information:
IP Profile for your line is - 71.67 Mbps (91.96% to the sync rate 77941Kbps due to re-tx high on downstream)

Connection stats

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 29186 Kbps, Downstream rate = 78717 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 77941 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):        6.4             11.8
Attn(dB):        11.9            0.0
Pwr(dBm):        12.5            0.9

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              -6
B:              243             97
M:              1               1
T:              0               0
R:              10              8
S:              0.0997          0.1554
L:              20384           5457
D:              8               8
I:              254             106
N:              254             106
Q:              8               8
V:              0               2
RxQueue:                80              39
TxQueue:                20              13
G.INP Framing:          18              18
G.INP lookback:         20              13
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:         0               0
RS:             1136622680              1939048
RSCorr:         823             187
RSUnCorr:       0               0
                        Bearer 1
OHF:            1770458         729016
OHFErr:         0               1
RS:             21244763                2815400
RSCorr:         16              7
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         129482          68
rtx_c:          123             1641
rtx_uc:         0               79134

                        G.INP Counters
LEFTRS:         0               25
minEFTR:        77947           19997
errFreeBits:    33807749                399646965

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    4262480695              0
Data Cells:     32733682                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:            26              26
AS:             28443

                        Bearer 0
INP:            47.00           47.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            0.00
OR:             0.01            0.01
AgR:            78021.15        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:        1/1             1/1

Total time = 7 hours 54 min 29 sec
FEC:            823             187
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            26              26
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 9 min 29 sec
FEC:            2               4
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               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 = 7 hours 54 min 29 sec
FEC:            823             187
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            26              26
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 = 7 hours 54 min 1 sec
FEC:            823             187
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0

For your connection, the acceptable range of speedsis 40 Mbps-71.67 Mbps .
 Additional Information:
 IP Profile for your line is - 71.67 Mbps

Telephone number:

***********

Phone exchange:

CUCKOO OAK

Estimated line speed:

80Mb (This may vary between 70Mb and 80Mb) - Checked on 2018-01-29 15:15:29

Current line speed:

71.4 Mb