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[dean0]

I have noticed over the last few days my speeds have dropped and ping has increased. I logged in the modem and it appears I am getting ALOT of errors, at the same time my telephone has no dial tone. I only have 1 master socket (mk3 openreach) with no extensions. I have reported the telephone not working to BT and they are working on it. Are these 2 linked? (not to clued up on vdsl)
Also I am on 40mb FCC connection, and the most I can get is 24mb, is this due to being far from the Fibre cab? (1100m).
BTW I am a Virgin Media 'Engineer', but no virgin in my area I would love to go down to the cab myself and fix it, but I am not sure BT would like that! My guess would be a bad D-side.

Stats below, any other info I can post to help diagnose the fault, many thanks!
edit. I have read somewhere that you can 'tweak' the SNR values to improve connection speeds, is this done through software?

My Current speed:

[kitz]

>> Are these 2 linked?

Highly likely.  Voice faults usually affect DSL.

>> My guess would be a bad D-side.

Yep... the fact you are generating lots of errors could be a corroded joint some where between the cab and home.  DSL will continue to work (but badly) with just one leg.  Voice requires both pairs.

>> I have read somewhere that you can 'tweak' the SNR values to improve connection speeds, is this done through software?

Im afraid the tweak doesnt work for FTTC, but even if it did I wouldn't recommend it whilst you are getting lots of errors.

>> Stats below, any other info I can post to help diagnose the fault, many thanks!

Since you appear to have an unlocked HG612, then grab a copy of DSLstats.  It helps provide useful information about your line.  If you monitor the SNR Margin, with HR (& other) faults I would expect it will be jumping around a fair bit. 

[dean0]

Many thanks for the info, on dslstats what do I monitor? I have loaded up SNR Margin Graph and have a Green/Red line showing SNR in dB, is it possible to see other infomation?
I will leave it running and add some screen shots here later.

[roseway]

By default DSLstats shows a few graphs on different tabs. If you go to Configuration --> Items to monitor, you'll see the full list of what's available.

[dean0]

Thanks just found them!

[dean0]

Here are some Screen Grabs from DSL Stats. Does this confirm a fault on my line as per above?










xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 4216 Kbps, Downstream rate = 24412 Kbps
Bearer:   0, Upstream rate = 4212 Kbps, Downstream rate = 21935 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1200)
DS: (33,859) (1216,1751)
     VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:        4216 kbps          24412 kbps
Actual Aggregate Tx Power:          6.5 dBm           12.5 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   8.7   52.6   N/A   N/A   N/A   21.3   64.2   N/A
Signal Attenuation(dB):   8.7   52.1   N/A   N/A   N/A   30.8   64.0   N/A
        SNR Margin(dB):   6.0   6.3   N/A   N/A   N/A   5.9   5.9   N/A
         TX Power(dBm):   -2.3   5.8   N/A   N/A   N/A   11.3   6.6   N/A
#

[b4dger]

....at the same time my telephone has no dial tone. I only have 1 master socket (mk3 openreach) with no extensions. I have reported the telephone not working to BT and they are working on it. Are these 2 linked? (not to clued up on vdsl)

Yes - it sounds like you have a line fault to me!

[NewtronStar]

Your stats are consistant with a long VDSL line of 1100 meters when you look at your band plan and have bolded the DS medley final band plan this shows the D2 tones your line can use.

Max:   Upstream rate = 4216 Kbps, Downstream rate = 24412 Kbps
Bearer:   0, Upstream rate = 4212 Kbps, Downstream rate = 21935 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Max:   Upstream rate = 4216 Kbps, Downstream rate = 24412 Kbps
Bearer:   0, Upstream rate = 4212 Kbps, Downstream rate = 21935 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1200)
DS: (33,859) (1216,1751)

[dean0]

Do you think I will see any improvement once the telephone line is working again?
A little off-topic but is the HG612 modem performance effected by heat, because it is sandwiched between a switch/router and feels kind of hot!

[NewtronStar]

Well we would have needed to see some graphs and stats before the telephone/voice issue started to make any kind of judgment on the line when the voice is fixed.

I have noticed over the last few days my speeds have dropped and ping has increased.

I don't know what sort of speeds you had before the telephone/voice side failed ?

[kitz]

Do you think I will see any improvement once the telephone line is working again?

I should hope so.   You cant raise a DSL fault when you have an open voice fault.

is the HG612 modem performance effected by heat, because it is sandwiched between a switch/router and feels kind of hot!

It can get rather warm.  I used to stand mine on its side edge which seems to keep it cooler.

[Bald_Eagle1]

Do you think I will see any improvement once the telephone line is working again?

You might seen an improvement, but it might not last for too long.

I'm around 1100m from the cabinet & was able to achieve & sustain around 30 Mbps sync speed until crosstalk started to hit, gradually taking it down to this (on fastpath):-

Code: [Select]

xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 4748 Kbps, Downstream rate = 22408 Kbps
Bearer: 0, Upstream rate = 4912 Kbps, Downstream rate = 22399 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1200)
DS: (33,859) (1216,1764)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:      4748 kbps     22408 kbps
Actual Aggregate Tx Power:        6.6 dBm      12.7 dBm
====================================================================================
  VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 8.0 52.9   N/A   N/A   N/A 21.6 65.0   N/A
Signal Attenuation(dB): 8.0 52.6   N/A   N/A   N/A 30.3 64.8   N/A
SNR Margin(dB): 5.4 5.7   N/A   N/A   N/A 6.3 6.2   N/A
TX Power(dBm): -1.5 5.9   N/A   N/A   N/A 11.6 6.3   N/A


FWIW, I have attached a typical day's worth of graphs from my connection for reference/comparison.

A little off-topic but is the HG612 modem performance effected by heat, because it is sandwiched between a switch/router and feels kind of hot!

I have had all the versions of the HG612 since 2011.
All of them get quite warm when laid flat, but run much cooler when stood on edge as mentioned by kitz.

None of them appeared to have problems due to overheating, even the very first version that was reputedly problematic.

[dean0]

Telephone line is working again, was fixed a week ago. Speeds have been slowly increasing and ping seems alot better. Considering my plan is 38mb/9.5mb do you think speeds will ever go higher?
Stats of today:

[Bald_Eagle1]

Telephone line is working again, was fixed a week ago. Speeds have been slowly increasing and ping seems alot better. Considering my plan is 38mb/9.5mb do you think speeds will ever go higher?
Stats of today:

When/if Vectoring is rolled out, we may see some speed increases as the effects of crosstalk should be reduced.

Other than that, based on your line length & attenuation/SNRM, I'm afraid the answer is likely to be no 

[dean0]

Yeah that really sucks, I wouldn't class 20/4 as broadband  Sadly there is no Virgin Media in the area, that I would get free, stuck with BT 'Infinity'