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Seaweed
Aspiring Contributor
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Message 1 of 21

Sharp drop of speed on broadband that hasn’t corrected itself.

Hello,

 

I have BT Broadband 80/20 service and usually get the full 80/20 sync speed however a couple of months ago the speed dropped significantly and hasn’t recovered. It would appear to me that an engineer has worked on another line and dislodged my circuit, but that’s only a guess. There is no difference whether plugged in master socket or not.

 

here is some reports from my log files. The incident happened at approx 11.30am on 30/8/18.

 

At 10.35 on 30/08/2018 (Prior to incident)

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Last initialization procedure status:	0
Max:	Upstream rate = 27881 Kbps, Downstream rate = 90116 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:		USmiley SurprisedN /DSmiley SurprisedN
Line Status:		No Defect
Training Status:	Showtime
		Down		Up
SNR (dB):	 8.7		 14.2
Attn(dB):	 14.2		 0.0
Pwr(dBm):	 13.4		 5.5
			VDSL2 framing
			Bearer 0
MSGc:		-6		26
B:		130		237
M:		1		1
T:		0		42
R:		8		16
S:		0.0518		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

At 12.35 on 30/08/2018 (after incident - drop of 30% speed

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Last initialization procedure status:	0
Max:	Upstream rate = 22566 Kbps, Downstream rate = 61016 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:		USmiley SurprisedN /DSmiley SurprisedN
Line Status:		No Defect
Training Status:	Showtime
		Down		Up
SNR (dB):	 0.8		 8.5
Attn(dB):	 14.2		 0.0
Pwr(dBm):	 13.4		 5.3
			VDSL2 framing
			Bearer 0
MSGc:		-6		26
B:		130		237
M:		1		1
T:		0		42
R:		8		16
S:		0.0518		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

 Are there any mods that could look into this for me?

 

thanks

 

S

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Distinguished Sage
Distinguished Sage
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Message 2 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

your connection speed is still 80/20mb it is your attainable which is showinh low so actual connection is unchanged

you could try a reset of your router to see if that corrects the attainable rate but I would just leave it as your speed is currently at max



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Seaweed
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Message 3 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

Hi imjolly,

 

Thanks for your reply. Here is the most recent from this morning,

 

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Last initialization procedure status:	0
Max:	Upstream rate = 18901 Kbps, Downstream rate = 63044 Kbps
Bearer:	0, Upstream rate = 18927 Kbps, Downstream rate = 63668 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:		USmiley SurprisedN /DSmiley SurprisedN
Line Status:		No Defect
Training Status:	Showtime
		Down		Up
SNR (dB):	 6.3		 5.8
Attn(dB):	 14.3		 0.0
Pwr(dBm):	 13.4		 4.9
			VDSL2 framing
			Bearer 0
MSGc:		-6		20
B:		243		239
M:		1		1
T:		0		64
R:		10		14
S:		0.1220		0.4035
L:		16651		5036
D:		8		1
I:		254		127
N:		254		254
Q:		8		0
V:		0		0
RxQueue:		51		0
TxQueue:		17		0
G.INP Framing:		18		0
G.INP lookback:		17		0
RRC bits:		0		24
			Bearer 1

 

Regards

S

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Distinguished Sage
Distinguished Sage
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Message 4 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

your router has obviously dropped connection and reconnected at lower speed

I would try conencting direct to test socket with a filter and repost stats  at same time connect corded phone to filter and dial 17070 option 2  should be silent apart from announcements.  as you have extension sockets check that there is no dial tone at any extension socket



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Seaweed
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Message 5 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

Hello,

This is the only socket we have in the house. We don’t have any sockets elsewhere.

I tried 17070 quiet line test and occasionally it would crackle a bit, then silent again for a while, then a slight crackle, but nothing constant.

Regards

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Distinguished Sage
Distinguished Sage
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Message 6 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

tha crackle will affect your broadband and you need to report a phone fault NOT broadband to 151 and get engineer visit   once crackle fixed your connection should improved

however I would try using the test socket and see if crackle still there and if so then phone 151



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Seaweed
Aspiring Contributor
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Message 7 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

Ok. Managed to get a wired handset and plugged into line the socket to double check. There was no crackling at all. Line was crystal clear. What is the next step please?
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Seaweed
Aspiring Contributor
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Message 8 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

FEC-2018-08-30-12.36.40.pngwhen problem startedSNRMargin-2018-08-30-12.36.40.pngwhen problem startedUntitled.pngline stats

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Seaweed
Aspiring Contributor
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Message 9 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

hg612-stats13012018.pngsync stats when ok. note 87988 down 27314 up

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Distinguished Guru
Distinguished Guru
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Message 10 of 21

Re: Sharp drop of speed on broadband that hasn’t corrected itself.

Looking at your stats there was a problen resulting in your SNR dropping very low. This now appears to have corrected itself and is now waiting for G.INP to be enabled again.

This is a totally automatic process and should happen within 14 days.

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