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204 posts

Master Geek
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Topic # 232175 3-Apr-2018 11:01
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My Netcomm modem seems to do it in 0.1db

 

 

 

 

 

 

ine Coding(Trellis):

 

On

 

On

 

 

 

SNR Margin (0.1 dB):

 

68

 

74

 

 

 

Attenuation (0.1 dB):

 

105

 

56

 

 

 

Output Power (0.1 dBm):

 

118

 

101

 

 

 

Attainable Rate (Kbps):

 

26844

 

1301

 

 

 

 

 

 

So does this mean the attenuation is actually 10.5 which is very good....right? I'm having nightmares getting fibre installed so am thinking of switching to vdsl but am not sure if it would be worth it or not.


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  Reply # 1987510 3-Apr-2018 11:04
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With that sync rate well worth switching to VDSL but make sure you get it done correct and don't use line filters and get a master filter installed

 

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Ex JohnR VodafoneNZ 17 years 4 days



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Master Geek
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  Reply # 1987513 3-Apr-2018 11:07
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Master filter is that little black box right? I already have a vdsl jack in the house, probably from a previous tenant. 


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  Reply # 1987538 3-Apr-2018 11:43
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Hi, so is the above stats via the mentioned VDSL filter?, a downstream 10.5dB on ADSL would indicate around 750-800m of cable, which should support quite decent speeds, until recently I had a similar attenuation/line length and got 48/20, but there are lots of other variables to add, ie noise levels from other users etc. But most definetly worth the change to VDSL and as JR said use the VDSL port for either ADSL or VDSL.

 

Cyril




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  Reply # 1987551 3-Apr-2018 12:07
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Yea it is already in that dedicated jack. Hmm...was hoping for a bit more than 48/20 approx, but oh well.


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  Reply # 1987554 3-Apr-2018 12:22
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Well you may get higher, mine was before the recent roll out of Vectoring, which should improve both speeds and stability.

 

Cyril


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  Reply # 1987555 3-Apr-2018 12:22
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Well you may get higher, mine was before the recent roll out of Vectoring, which should improve both speeds and stability.

 

Cyril


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  Reply # 1987576 3-Apr-2018 12:45
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Im on VDSL and was getting around 65/30 for a few months..... was stoked. Its since dropped to 45/15, so, can I have your 48/20 ? ;)

 

 





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  Reply # 1987663 3-Apr-2018 14:35
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cyril7:

 

Well you may get higher, mine was before the recent roll out of Vectoring, which should improve both speeds and stability.

 

Cyril

 

 

Vectoring aint out yet, just the linecards capable of doing it ;)

 

 

 

@op yes, upgrade to VDSL.





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  Reply # 1987671 3-Apr-2018 14:48
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Just a general comment on line attenuation and DSL performance: It's generally a useful indicator for lines in a lab setting or as an average for large populations of lines in the wild, but sometimes comes unstuck for individual lines where other factors, such as noise, crosstalk from other services in the cable sheath and even poor jointing can take precedence. 

 

Alan


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