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186 posts

Master Geek

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# 141180 3-Mar-2014 23:36
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Hi all,

So, after my ADSL2+ upgrade to VDSL and Cable failed I'm back at trying to optimise my ADSL2+ line. I've searched geekzone and google and found a lot of suggestions but...

I have removed the filter (naked so not needed) and cut all the wires to unused extensions (all but the Modem). All this seems to have made zero difference (the attainable rate went up but the Rate only marginally). I also tuned MTU and other minor things.

What I see in my HG556a is the following:

 

 

 

 

Mode:

 

ADSL2+ 

 

 

 

Line Coding:

 

Trellis On 

 

 

 

Status:

 

Connected 

 

 

 

Link Power State:

 

L0 

 

 

 

 

 

 

 

 


 

 

 

 



 

 Downstream

 

Upstream

 

 

 

SNR Margin (dB):

 

12.6 

 

13.1 

 

 

 

Attenuation (dB):

 

21.5 

 

8.6 

 

 

 

Power (dBm):

 

7.9 

 

12.8 

 

 

 

Attainable Rate (Kbps):

 

16664 

 

1264 

 

 

 

Rate (Kbps):

 

13817 

 

1176 

 

 

 

 


Speednet shows me no more than 11Mbit down and 1Mbit up. And if I calc the SNR and Attenuation I should be at about the Attainable rate. So what's going on? Why am I stuck so low? Is that all comms overhead?

And what else can improve my speed? Go to a Draytek? Install a master filter? Or is Vodafone actually throttling ADSL?

I sure hope I'll get fibre to the property but hopes are not high atm (date for fibre is in the region classified as unknown).

So I hope someone has a good tip for me. The main thing I am looking for is more upstream.

Cheers Oliver



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5724 posts

Uber Geek

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  # 998517 3-Mar-2014 23:36
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Hello... Our robot found some keywords in your post, so here is an automated reply with some important things to note regarding broadband speeds.

 



 

If you are posting regarding DSL speeds please check that

 



 

- you have reset your modem and router

 


 

- your PC (or other PCs in your LAN) is not downloading large files when you are testing

 

- you are not being throttled by your ISP due to going over the monthly cap

 


 

- your tests are always done on an ethernet connection to the router - do not use wireless for testing

 


 

- you read this topic and follow the instructions there.

 



 

Make sure you provide information for other users to help you. If you have not already done it, please EDIT your post and add this now:

 



 

- Your ISP and plan

 


 

- Type of connection (ADSL, ADSL2, VDSL)

 


 

- Your modem DSL stats (do not worry about posting Speedtest, we need sync rate, attenuation and noise margin)

 


 

- Your general location (or street)

 


 

- If you are rural or urban

 


 

- If you know your connection is to an exchange, cabinet or conklin

 


 

- If your connection is to a ULL or wholesale service

 


 

- If you have done an isolation test as per the link above

 



 

Most of the problems with speed are likely to be related to internal wiring issues. Read this discussion to find out more about this. Your ISP is not intentionally slowing you down today (unless you are on a managed plan). Also if this is the school holidays it's likely you will notice slower than usual speed due to more users online.

 



 

A master splitter is required for VDSL2 and in most cases will improve speeds on DSL connections. Regular disconnections can be a monitored alarm or a set top box trying to connect. If there's an alarm connected to your line even if you don't have an alarm contract it may still try to connect so it's worth checking.

 



 

I recommend you read these two blog posts:

 



 

- Is your premises phone wiring impacting your broadband performance? (very technical)

 


 

- Are you receiving a substandard ULL ADSL2+ connection from your ISP?




I am the Geekzone Robot and I am here to help. I am from the Internet. I do not interact. Do not expect other replies from me.



'That VDSL Cat'
11027 posts

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  # 998536 3-Mar-2014 23:50
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your not being throttled, nor should you be playing with your MTU.

by "ripping out", it infers you werent very careful with what you were doing. in which case, leaving the splitter in would have been a far greater move.

you could simply be dealing with crosstalk or copper quality.

with your attenuation, im surprised they allowed vdsl at all.


ild expect your sync rate to be slightly higher, you could try different modems.




#include <std_disclaimer>

 

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.


 
 
 
 




186 posts

Master Geek

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  # 998565 4-Mar-2014 08:22
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Hi hio77,

You misunderstood. As the table shows I am still on ADSL2+. VF tried VDSL and Cable but the 1st didn't work (about 1.9k from box) and the second they are not prepared to pull cable to my house. So :-(

Sorry, should have been more specific. The MTU I changed was on the machines not the router. Not touching that.

As for carelessness that was more in my wording than the action. There is still more I can do but that would mean actually changing the current cabling (and I will probably do that to eliminate another junction).

I have naked ADSL so there is no phone even close to the copper. The common splitters have zero dampening function but add another junction. So I removed it.

Today actually the numbers my modem reports have gotten slightly better (about 14400Kbit/s) no idea why it took so long but it might be a thing between modem and DSLAM. The thing is I see no diff at all with the speedtest figures. That of course can have other reasons hence my question of what experiences here are.

Also reading up on master filters I doubt it will help my case since I have no phones or secondary loop anymore. Is that a correct assumption?

(oh and just noticed geekzone has eaten my table tags above so sorry for the number mess)

Cheers Oliver

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  # 998567 4-Mar-2014 08:27
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I don't actually see an issue here.

You shouldn't be touching the MTU, this needs to stay at what your ISP uses.



186 posts

Master Geek

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  # 998571 4-Mar-2014 08:46
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Yeah, I think I'm just hitting the limit. As I said I'll clean up the last bit of wiring and check all links for corrosion but that's about it.
Only thing is the speednet numbers. If the line says 14000kbit/s why is speednet giving me 11kbit/s. Might be totally normal.

19282 posts

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  # 998573 4-Mar-2014 08:55
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What software version is the HG556a running?



186 posts

Master Geek

Lifetime subscriber

  # 998574 4-Mar-2014 09:13
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Hi John,

Standard as it came from VF about 2.5y ago. I have always refrained from upgrading the hg556 because "never touch a running system...that is vital to the happiness of my wife if there is no pertinent need" ;-)
But if you say there is actually an advantage in doing so...

Cheers Oliver

 
 
 
 




186 posts

Master Geek

Lifetime subscriber

  # 998579 4-Mar-2014 09:29
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Oh and I am at work so can't look at the installed version at the moment.

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Uber Geek
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  # 998580 4-Mar-2014 09:29
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I would update as it fixes a WiFi bug, Over on the Vodafone NZ community you will find upgrade guide



186 posts

Master Geek

Lifetime subscriber

  # 998588 4-Mar-2014 09:47
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Ok. Would that be version HG556aV100R001C12B037.bin ?

19282 posts

Uber Geek
Inactive user


  # 998591 4-Mar-2014 09:54
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Sure is and please do not upgrade over WiFi and update does take longer than 2 minutes more like 7 - 8

John



186 posts

Master Geek

Lifetime subscriber

  # 998594 4-Mar-2014 09:58
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Ok. Thanks. Will try tonight and post if it helped.



186 posts

Master Geek

Lifetime subscriber

  # 998596 4-Mar-2014 09:58
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btw, are there release notes somewhere for these updates?

19282 posts

Uber Geek
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  # 998602 4-Mar-2014 10:14
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Bug fixes :P

'That VDSL Cat'
11027 posts

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  # 998657 4-Mar-2014 11:20
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olivernz: Yeah, I think I'm just hitting the limit. As I said I'll clean up the last bit of wiring and check all links for corrosion but that's about it.
Only thing is the speednet numbers. If the line says 14000kbit/s why is speednet giving me 11kbit/s. Might be totally normal.


i assume you mean 11mbit. if so, your sync rate, and your real world throughput will be different, due to overhead.




#include <std_disclaimer>

 

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.


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