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Author Topic: What are normal sub 1Mbps download sync speeds?  (Read 1425 times)

Weaver

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  • Retd sw dev; A&A; 3 7km ADSL2; IPv6; Firebrick
Re: What are normal sub 1Mbps download sync speeds?
« Reply #15 on: March 22, 2017, 02:38:58 AM »

That downstream attenuation is enormous compared with mine. You win an award.

It's amazing seeing an upstream almost as fast as the downstream. I don't get nearly that performance.
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burakkucat

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Re: What are normal sub 1Mbps download sync speeds?
« Reply #16 on: March 22, 2017, 09:32:58 PM »

I don't know how quickly those statistics were harvested one the power was restored but I note that the DS SNRM is showing as 3.3 dB.
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willbard

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Re: What are normal sub 1Mbps download sync speeds?
« Reply #17 on: March 23, 2017, 02:52:06 AM »

I can't claim any (knowing) influence on the downstream attenuation so any award is just luck.

Engineer visit today said line too long and I'm probably the last property in the lane to be able to get broadband. But we'll leave things as is for the moment. Fibre imminent!

The stats were harvested almost immediately after power restored (within a few minutes). Since then speeds have dropped a bit but at least the line is holding and the engineer tells me there is tweaking that can be done if the instability returns.

The current stats below & I've now got used to what I thought were the peculiar speeds.

Link Information
         
Uptime:   0 days, 9:31:19
DSL Type:   ITU-T G.992.3
Bandwidth (Up/Down) [kbps/kbps]:   603 / 623
Data Transferred (Sent/Received) [MB/MB]:   75,65 / 473,97
Output Power (Up/Down) [dBm]:   12,6 / 0,0
Line Attenuation (Up/Down) [dB]:   41,3 / 74,5
SN Margin (Up/Down) [dB]:   6,9 / 2,8
System Vendor ID (Local/Remote):   TMMB / ----
Chipset Vendor ID (Local/Remote):   BDCM / IFTN
Loss of Framing (Local/Remote):   86 / 0
Loss of Signal (Local/Remote):   11 / 0
Loss of Power (Local/Remote):   0 / 0
Loss of Link (Remote):   -
Error Seconds (Local/Remote):   610 / 4
FEC Errors (Up/Down):   0 / 0
CRC Errors (Up/Down):   57 / 598
HEC Errors (Up/Down):   49 / 283
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Black Sheep

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Re: What are normal sub 1Mbps download sync speeds?
« Reply #18 on: March 23, 2017, 07:40:40 AM »

I can tell you no further improvements can be made on your E-side cable (the cable from Exchange to Cabinet), as can sometimes be done.

Your particular Cab has just the one cable feeding it, as opposed to some others that may have up to 5/6 different cables feeding them.
These cables are made up of different poundages (thickness) and are generally a hybrid of Copper and Ali metal. Copper has a better resistance value than Ali, and therefore generally a cable made up of as much Copper as possible, will provide better speeds than one made up of mainly Ali.

Fingers crossed for FTTC coming to you soon. :)

 
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willbard

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Re: What are normal sub 1Mbps download sync speeds?
« Reply #19 on: March 25, 2017, 11:11:57 PM »

Thanks again for the various comments. It's been very helpful and I've learnt a lot and won't take up any more of your time.
The engineer here a few days ago was very patient and helpful, found one or two dodgy bits and fixed them and things seem to be more stable now. Current stats are;

Uptime:   1 day, 10:13:52
DSL Type:    ITU-T G.992.3
Bandwidth (Up/Down) [kbps/kbps]:    635 / 826
Data Transferred (Sent/Received) [MB/GB]:    154,71 / 1,10
Output Power (Up/Down) [dBm]:   12,8 / 0,0
Line Attenuation (Up/Down) [dB]:   41,5 / 73,0
SN Margin (Up/Down) [dB]:    6,2 / 2,6
System Vendor ID (Local/Remote):    TMMB / ----
Chipset Vendor ID (Local/Remote):    BDCM / IFTN
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):    -
Error Seconds (Local/Remote):    2.589 / 0
FEC Errors (Up/Down):     0 / 0
CRC Errors (Up/Down):    184 / 4.670
HEC Errors (Up/Down):     79 / 3.279
 
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burakkucat

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Re: What are normal sub 1Mbps download sync speeds?
« Reply #20 on: March 25, 2017, 11:45:43 PM »

Compared with the previous data set, the latest set of statistics shows an improvement.

Code: [Select]
[Duo2 ~]$ sdiff 20170323-stats.txt 20170325-stats.txt
Uptime:   0 days, 9:31:19       | Uptime:   1 day, 10:13:52
DSL Type:   ITU-T G.992.3       | DSL Type:    ITU-T G.992.3
Bandwidth (Up/Down) [kbps/kbps]:   603 / 623       | Bandwidth (Up/Down) [kbps/kbps]:    635 / 826
Data Transferred (Sent/Received) [MB/MB]:   75,65 / 473,97    | Data Transferred (Sent/Received) [MB/GB]:    154,71 / 1,10
Output Power (Up/Down) [dBm]:   12,6 / 0,0       | Output Power (Up/Down) [dBm]:   12,8 / 0,0
Line Attenuation (Up/Down) [dB]:   41,3 / 74,5       | Line Attenuation (Up/Down) [dB]:   41,5 / 73,0
SN Margin (Up/Down) [dB]:   6,9 / 2,8       | SN Margin (Up/Down) [dB]:    6,2 / 2,6
System Vendor ID (Local/Remote):   TMMB / ----       | System Vendor ID (Local/Remote):    TMMB / ----
Chipset Vendor ID (Local/Remote):   BDCM / IFTN       | Chipset Vendor ID (Local/Remote):    BDCM / IFTN
Loss of Framing (Local/Remote):   86 / 0       | Loss of Framing (Local/Remote):    0 / 0
Loss of Signal (Local/Remote):   11 / 0       | Loss of Signal (Local/Remote):      0 / 0
Loss of Power (Local/Remote):   0 / 0       | Loss of Power (Local/Remote):      0 / 0
Loss of Link (Remote):   -       | Loss of Link (Remote):    -
Error Seconds (Local/Remote):   610 / 4       | Error Seconds (Local/Remote):    2.589 / 0
FEC Errors (Up/Down):   0 / 0       | FEC Errors (Up/Down):     0 / 0
CRC Errors (Up/Down):   57 / 598       | CRC Errors (Up/Down):    184 / 4.670
HEC Errors (Up/Down):   49 / 283       | HEC Errors (Up/Down):     79 / 3.279
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