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Topic # 223639 10-Oct-2017 12:25
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I moved over the last couple of weeks and the new property had a structured cabling cabinet, but no master splitter.

 

To get things up and running quickly I used a standard ADSL splitting off a phone jack and got the following performance.

 

DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 801 / 14.741
Data Transferred (Sent/Received) [kB/kB]: 0,00 / 0,00
Output Power (Up/Down) [dBm]: 10,5 / 19,0
Line Attenuation (Up/Down) [dB]: 14,5 / 26,0
SN Margin (Up/Down) [dB]: 6,0 / 6,0
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 27 / 0
Loss of Signal (Local/Remote): 8 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 4 / 0
FEC Errors (Up/Down): 56 / 18.759
CRC Errors (Up/Down): 56 / 301
HEC Errors (Up/Down): 155 / 10

 

 

 

At the weekend I installed an xDSL master splitter plus connected the modem directly in the structured cabling cabinet in the garage. Approx 50% boost in upload and a reasonable boost in download. It will be interesting to see how this improves as DLM kicks in

 

DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 1.221 / 16.578
Data Transferred (Sent/Received) [kB/kB]: 0,00 / 0,00
Output Power (Up/Down) [dBm]: 10,0 / 18,5
Line Attenuation (Up/Down) [dB]: 14,0 / 25,0
SN Margin (Up/Down) [dB]: 7,0 / 6,5
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 108
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 1.008 / 0

 

 





Generally known online as OpenMedia, now working for Red Hat New Zealand as a Solution Architect for all things Linux, Virtual and of course Cloud. Still playing with MythTV and digital media on the side.

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  Reply # 1880335 10-Oct-2017 13:19
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Nice one openmedia!

 

Diagnosis driven DLM will kick in pretty quickly and will reach 80% of line optimisation rapidly. After that it can take up to 10 days to reach steady state. ^Mike

 

 


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  Reply # 1880338 10-Oct-2017 13:33
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Yep that's a typical experience.

 

 

 

Digging into it, I'm seeing you originally had low upstream, Low speeds in the upstream on ADSL is quite typically an indication of internal wiring pulling it down.

 

Large drop in error rates there, which will be the larger improvement (be it invisible otherwise)

 

 

 

ddDLM has you already on the 6dB profile for snr, but PSD changes still have the chance of netting an extra boost :)





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  Reply # 1881741 11-Oct-2017 09:38
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Internal wiring is all Cat5e for phone but I'm wondering if there is some serious cross talk somewhere as even with the master splitter our voice line is dreadful.

 

Line isn't quite as good as our old address, but 16 down and 1.2 up isn't too bad until we can get fibre.

 

Might try a different newer modem to see if it has any differences.

 

Steven





Generally known online as OpenMedia, now working for Red Hat New Zealand as a Solution Architect for all things Linux, Virtual and of course Cloud. Still playing with MythTV and digital media on the side.

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  Reply # 1881780 11-Oct-2017 10:04
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I did one recently on a farm. It had very poor 7Mbps down / 0.5Mbps up. After the splitter install a bit of an increase to 8/0.8 and no more disconnects. However, SNR was sitting at 27 - so it's been on a major stability profile. Approx 10 days later, dd-DLM has recognised the now clean line and said lets try an SNR of 6. Now connection is running at 16/0.9 - so very happy broadband now.

 

@hio77 this is a Spark connection, I'll PM you the phone number. If you have time, you may like to post some more stats.

 

 





Chorus has spent $1.4 billion on making their xDSL broadband network faster. If your still stuck on ADSL or VDSL, why not spend from $150 on a master filter install to make sure you are getting the most out of your connection?
I install - Naked DSL, DSL Master Splitters, VoIP, data cabling and general computer support for home and small business.
Rural Broadband RBI installer for Ultimate Broadband and Full Flavour

 

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  Reply # 1881896 11-Oct-2017 12:03
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coffeebaron:

 

I did one recently on a farm. It had very poor 7Mbps down / 0.5Mbps up. After the splitter install a bit of an increase to 8/0.8 and no more disconnects. However, SNR was sitting at 27 - so it's been on a major stability profile. Approx 10 days later, dd-DLM has recognised the now clean line and said lets try an SNR of 6. Now connection is running at 16/0.9 - so very happy broadband now.

 

@hio77 this is a Spark connection, I'll PM you the phone number. If you have time, you may like to post some more stats.

 

 

 

 

Can be a little difficult to comment on this without exposing too much about the customer.

 

However; i can definitely agree with everything above.

 

 

 

When i pull the line back to the last 60 day period one thing you have not covered is very noticeable.

 

The customer experienced Frequent disconnections (6-16 so often dipping below chorus acceptable levels but probably annoying)

 

 

 

 

 

Physical stats, averaging 7102/594 straight up to 16524/901 average.

 

Drop in line attenuation from 34dB down to 26dB.

 

 

 

ddDLM is very much still training on this line, it was heavily pulled back due to the errors on the line.

 

 

 

Weekly data confirming error rates won't be in until about 2 weeks away to realistically show a drop in errors.

 

 





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  Reply # 1881899 11-Oct-2017 12:10
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This line may be quite good for VDSL - what do you think @hio77?





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'That VDSL Cat'
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  Reply # 1881910 11-Oct-2017 12:18
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michaelmurfy:

 

This line may be quite good for VDSL - what do you think @hio77?

 

 

at 25dB it can be a mixed bag. (I'm assuming you mean OP)

 

 

 

Personally i love to see VDSL go live, it just requires a clean line (especially at distance)





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