[AusNOG] NBN VDSL Speeds | Line Sync | Determining Max Throughput

[Matthew Muscat]

You should be able to see the maximum line rate (depending on your modem) -
I've got an ISP Supplied (Internode) Technicolour TG-789.

We're about 20m from the pillar and have a 100/40 service - max line rate
appears currently at 140/57 (see below)

DSL Stats:

Maximum Line rate:     57.62 Mbps         140.91 Mbps
Line Rate:             44.19 Mbps         107.73 Mbps
Output Power           -1.1  dBm            8.3  dBm
Noise Margin           15.4  dB            15.6 dB
Line Attenuation  3.1, 12.3, 18.5 dB  7.7, 16.3, 23.5 dB

Regards,
[image: Mamis]     Matthew Muscat
Director
p +61 3 9024 5755 <+61390245755>
m +61 425 782 555 <+61425782555>
e matthew at mamis.com.au
w www.mamis.com.au

On 14 March 2017 at 21:04, Richard Ham (lists) <rich-lists at edit-co.com>
wrote:

> My Zyxel VMG8324-B10A shows the following stat on a 50/20 service. A NF8AC
> doesn’t have any such stats that I can find.
>
>
>
>                Line Rate:     22.599 Mbps       54.998 Mbps
>
>     Actual Net Data Rate:     22.600 Mbps       54.999 Mbps
>
> Attainable Net Data Rate:     39.884 Mbps       97.528 Mbps
>
>
>
> A cisco 887 I have says the following in an sh controllers vdsl 0
>
>
>
> Attainable Rate:        138131 <13%2081%2031> kbits/s           48351
> kbits/s
>
> -snip-
>
>                   DS Channel1     DS Channel0   US Channel1       US
> Channel0
>
> Speed (kbps):             0            28000             0
> 6400
>
>
>
> Cheers,
>
>
>
> Richard
>
>
>
>
>
> You'll sync at your purchased speed, with attainable rate showing your
> line's possible maximum.  E.g. I pay for 50/20, so sync at 55/22.  When I
> was previously paying for 100/40 on the same line, I was syncing at
> 110/44.  Not sure on attainable rate, as the HG658 doesn't show it :\
>
>
>
>
>
>
>
> On Tue, 14 Mar 2017 at 8:31 pm, Ben Cummings <bcummings at clublinks.com.au>
> wrote:
>
> Hello All,
>
>
>
> Just a quick question that will likely be a quick answer for someone with
> more familiarity on the subject matter.
>
>
>
> I haven't had much exposure to the inner workings of the NBN or xDSL (so
> please excuse my ignorance) and haven't been able to find an answer
> elsewhere.
>
>
>
> I'm not too far away from getting FTTN at home, and am curious as to
> whether my standard 25/5 plan will show me a line sync speed of let's say
> for arguments sake, 65000 but have a maximum throughput of 25000 set
> further upstream by the RSP (thus suggesting a 50Mbps plan would allow me
> to use up to the full 50Mbps, but that I wouldn't be able to achieve near
> full utilisation of a 100Mbps service) -or- would a 25/5 service show my
> line sync as 25000 and provide me no real indication of what I could
> theoretically push through the copper after attenuation, equipment choice
> and cable wear and tear comes in to play if the cap were taken off.
>
>
>
> Any insights or wisdom on this would be greatly appreciated.
>
>
>
> Kind Regards,
>
>
>
> Ben Cummings
>
> Clublinks
>
>
>
>
>
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