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<p>One point that I am not sure has been made is that most providers
will allow you to order a 100/40 service, see what you get and
then downgrade to a plan that matches with no penalty (regardless
of any contract). Indeed I think they may be required to do this
by the ACMA/ACCC. So I would talk to the sales reps about this
(get any commitment regarding downgrade in writing) and then go
for a 100/40!</p>
<p>Damian<br>
</p>
<br>
<div class="moz-cite-prefix">On 15/03/17 00:08, Ben Cummings wrote:<br>
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<title>RE: [AusNOG] NBN VDSL Speeds | Line Sync | Determining Max
Throughput</title>
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<p><font size="2">Thank you all for taking the time to reply, I
really appreciate your quick and informative responses.<br>
<br>
So my understanding now is that Maximum Line Rate/Attainable
Rate ≠ Line Sync Rate.<br>
And to avoid a hypothetical scenario where I get stuck on a
contract paying for a 50Mbps service, that will only ever
allow me to see 30Mbps - I need to connect a modem that shows
the maximum attainable rate, to see what I can actually
achieve.<br>
<br>
Unfortunately it doesn't appear my new learning project
provides that information (unless a VDSL connection shows
detail than a ADSL connection does) - so I'll have to borrow
something to examine that further.<br>
<br>
But I'm very much looking forward to being able to push
through more than 13/0.8 !<br>
<br>
bcummings@the320> show interfaces at-2/0/0 extensive<br>
--snip--<br>
ADSL status:<br>
Modem status : Showtime (Adsl2plus)<br>
DSL mode : Auto Annex A<br>
Last fail code: None<br>
Subfunction : 0x00<br>
Seconds in showtime : 73848<br>
ADSL Chipset Information:
ATU-R ATU-C<br>
Vendor Country :
0xb5 0xb5<br>
Vendor ID :
BDCM BDCM<br>
Vendor Specific:
0x9385 0xa1f2<br>
ADSL Statistics:
ATU-R ATU-C<br>
Attenuation (dB) :
31.0 18.0<br>
Capacity used (%) :
0 0<br>
Noise margin (dB) :
6.0 7.5<br>
Output power (dBm) :
19.0 12.0<br>
<br>
Interleave Fast
Interleave Fast<br>
Bit rate (kbps) : 15128 0
1087 0<br>
CRC : 0
474 0 0<br>
FEC : 0
0 0 0<br>
HEC : 24722
0 0 0<br>
Received cells : 544249614 0<br>
Transmitted cells : 108703718 0<br>
<br>
<br>
Thanks again everyone.<br>
<br>
Kind Regards,<br>
<br>
Ben Cummings<br>
Clublinks<br>
<br>
<br>
-----Original Message-----<br>
From: Matthew Muscat [<a moz-do-not-send="true"
href="mailto:matthew@mamis.com.au">mailto:matthew@mamis.com.au</a>]<br>
Sent: Tue 14/03/2017 22:45<br>
To: Ben Cummings<br>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a><br>
Subject: Re: [AusNOG] NBN VDSL Speeds | Line Sync |
Determining Max Throughput<br>
<br>
You should be able to see the maximum line rate (depending on
your modem) -<br>
I've got an ISP Supplied (Internode) Technicolour TG-789.<br>
<br>
We're about 20m from the pillar and have a 100/40 service -
max line rate<br>
appears currently at 140/57 (see below)<br>
<br>
DSL Stats:<br>
<br>
Maximum Line rate: 57.62 Mbps 140.91 Mbps<br>
Line Rate: 44.19 Mbps 107.73 Mbps<br>
Output Power -1.1 dBm 8.3 dBm<br>
Noise Margin 15.4 dB 15.6 dB<br>
Line Attenuation 3.1, 12.3, 18.5 dB 7.7, 16.3, 23.5 dB<br>
<br>
Regards,<br>
[image: Mamis] Matthew Muscat<br>
Director<br>
p +61 3 9024 5755 <+61390245755><br>
m +61 425 782 555 <+61425782555><br>
e <a class="moz-txt-link-abbreviated" href="mailto:matthew@mamis.com.au">matthew@mamis.com.au</a><br>
w <a class="moz-txt-link-abbreviated" href="http://www.mamis.com.au">www.mamis.com.au</a><br>
<br>
On 14 March 2017 at 21:04, Richard Ham (lists)
<a class="moz-txt-link-rfc2396E" href="mailto:rich-lists@edit-co.com"><rich-lists@edit-co.com></a><br>
wrote:<br>
<br>
> My Zyxel VMG8324-B10A shows the following stat on a 50/20
service. A NF8AC<br>
> doesn't have any such stats that I can find.<br>
><br>
><br>
><br>
> Line Rate: 22.599 Mbps 54.998
Mbps<br>
><br>
> Actual Net Data Rate: 22.600 Mbps 54.999
Mbps<br>
><br>
> Attainable Net Data Rate: 39.884 Mbps 97.528
Mbps<br>
><br>
><br>
><br>
> A cisco 887 I have says the following in an sh
controllers vdsl 0<br>
><br>
><br>
><br>
> Attainable Rate: 138131 <13%2081%2031>
kbits/s 48351<br>
> kbits/s<br>
><br>
> -snip-<br>
><br>
> DS Channel1 DS Channel0 US
Channel1 US<br>
> Channel0<br>
><br>
> Speed (kbps): 0 28000
0<br>
> 6400<br>
><br>
><br>
><br>
> Cheers,<br>
><br>
><br>
><br>
> Richard<br>
><br>
><br>
><br>
><br>
><br>
> You'll sync at your purchased speed, with attainable rate
showing your<br>
> line's possible maximum. E.g. I pay for 50/20, so sync
at 55/22. When I<br>
> was previously paying for 100/40 on the same line, I was
syncing at<br>
> 110/44. Not sure on attainable rate, as the HG658
doesn't show it :\<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> On Tue, 14 Mar 2017 at 8:31 pm, Ben Cummings
<a class="moz-txt-link-rfc2396E" href="mailto:bcummings@clublinks.com.au"><bcummings@clublinks.com.au></a><br>
> wrote:<br>
><br>
> Hello All,<br>
><br>
><br>
><br>
> Just a quick question that will likely be a quick answer
for someone with<br>
> more familiarity on the subject matter.<br>
><br>
><br>
><br>
> I haven't had much exposure to the inner workings of the
NBN or xDSL (so<br>
> please excuse my ignorance) and haven't been able to find
an answer<br>
> elsewhere.<br>
><br>
><br>
><br>
> I'm not too far away from getting FTTN at home, and am
curious as to<br>
> whether my standard 25/5 plan will show me a line sync
speed of let's say<br>
> for arguments sake, 65000 but have a maximum throughput
of 25000 set<br>
> further upstream by the RSP (thus suggesting a 50Mbps
plan would allow me<br>
> to use up to the full 50Mbps, but that I wouldn't be able
to achieve near<br>
> full utilisation of a 100Mbps service) -or- would a 25/5
service show my<br>
> line sync as 25000 and provide me no real indication of
what I could<br>
> theoretically push through the copper after attenuation,
equipment choice<br>
> and cable wear and tear comes in to play if the cap were
taken off.<br>
><br>
><br>
><br>
> Any insights or wisdom on this would be greatly
appreciated.<br>
><br>
><br>
><br>
> Kind Regards,<br>
><br>
><br>
><br>
> Ben Cummings<br>
><br>
> Clublinks<br>
><br>
><br>
><br>
><br>
><br>
> _______________________________________________<br>
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><br>
><br>
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