LLU service now available from IDNet - Discuss here

esh · Nov 02, 2011, 10:52:14

Quote from: RobertoS on Nov 01, 2011, 21:12:59
@esh
There is something seriously wrong there esh. If it wasn't doing that before you were moved, I suggest that either the connection at the exchange is dodgy, or your router needs a firmware upgrade.

Sorry, could you clarify for me what specifically *is* wrong? The problem being, I changed router to get ADSL2 because my old modem was only ADSL1. So I was assuming these features are just typical to ADSL2. If something is wrong I don't know whether it would be LLU, the router, or the exchange. Just to say, the line is very clean; I have hardly any RX/TX errors. The dips in SNR margin I see on the graph are at fairly predictable peak times, typically 6-8pm and most of the weekend.

Also, regarding loop attenutation, I can confirm mine dropped by about 1dB to 29dB.

mk1 · Nov 07, 2011, 18:21:41

UPDATE:

I think somehow i may have moved to LLU and WOW:

Pre LLU

Sync download: 2471kpbs Noise margin: 14.6
Sync Upload: 770kpbs Noise margin: 5.1

After

Download 4327 Noise: 5.1
Upload 1060 Noise 6.3

Speed test:

Pre: 2.2mbps/0.6mbps
LLU: 3.66/0.9

I am a very happy customer hope it sticks?

Rik · Nov 07, 2011, 18:28:43

It would be worth checking whether IDNet could reduce your d/s target noise margin. They did mine and gained me 500k over BT, more when you take the profile out of the equation.

mk1 · Nov 07, 2011, 21:51:23

Umm that's maybe a good idea, I also need to ask them why the website says my package is no longer ADSL2+ its just ADSL?

Rik · Nov 08, 2011, 09:44:59

I'll be interested to hear the answer to that.

esh · Nov 08, 2011, 10:14:33

The account portal for LLU is currently bugged. Almost none of them say ADSL2+ even when it is. I think they are working on this.

Rik · Nov 08, 2011, 10:20:24

Thanks, esh.

.Griff. · Nov 08, 2011, 12:48:40

Quote from: mk1 on Nov 07, 2011, 21:51:23
Umm that's maybe a good idea, I also need to ask them why the website says my package is no longer ADSL2+ its just ADSL?

Given your low(ish) speeds then it make sense to place you on ADSL rather than ADSL2+. All ADSL2+ would do is increase your attenuation slightly and you wouldn't see any benefit from the extra speed offered by ADSL2+ anyway.

mk1 · Nov 09, 2011, 11:57:10

So got idnet to tweek the snr results are:
Sync D/l is 4953kbps Noise Margin: 3.1
Sync U/l is 1157 Noise Margin 3.1

So slightly better sync (not had time to speed test) but this is causing more drop outs, i think i will settle for the previous setting as the optimum.

Griff:

How does ADSL make the noise on the line lower? Surely the Line Attenuation is the same whichever? (note: i have a very bad line) Attenuation is 58 down and 32.9 up

Rik · Nov 09, 2011, 12:23:45

Attenuation is a function of frequency and resistance. The latter stays more or less the same, but ADSL2+ uses higher frequencies which increases attenuation.

.Griff. · Nov 09, 2011, 13:13:08

Quote from: mk1 on Nov 09, 2011, 11:57:10
Griff:

How does ADSL make the noise on the line lower? Surely the Line Attenuation is the same whichever? (note: i have a very bad line) Attenuation is 58 down and 32.9 up

Rik beat me to the answer above.

mk1 · Nov 09, 2011, 13:59:42

I see but i guess the thoughput would be lower on adsl? I think i am just going to get it put back to 6db

.Griff. · Nov 09, 2011, 15:24:50

Quote from: mk1 on Nov 09, 2011, 13:59:42
I see but i guess the thoughput would be lower on adsl? I think i am just going to get it put back to 6db

Nope throughput would be slightly higher on ADSL due to slightly less attenuation.

Rik · Nov 09, 2011, 16:25:39

Griff beat me to that answer.

jezuk1 · Nov 10, 2011, 10:54:44

The attenuation figure you see on the router web page is a value measured at a specific frequency (normally 100Khz or some vendors I've seen use 300Khz). I believe the router also analyses attenuation for each tone, but the value most people see is the one measured at said specific frequency. At least that's my understanding