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6 posts

Wannabe Geek


# 144059 6-May-2014 10:38
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Hi

I have been running with VDSL from Vodafone for a couple of months. I am probably 2-300 meters from the exchange and have pretty good line Sync speeds see below for all stats. I have however only ever get at absolute best maybe 28Mb downloads when testing althoughin most cases it averages 20Mb. I have had three different modems since I started with Vodafone and as requested waited the mandatory ten days before any changes where made. I am currently runing a DrayTek Vigor 2860 The line sync speed is a lot higher than I have ever achieved in real world and I just assumed that was always going to be the case. The other day when I changed to the Vigor ( I test a few modems from time to time with work) I plugged it in and ran a test pretty much straight away and got just shy of 40Mb though wow thats great, however within an hour I was back to my normal mid 20Mb download. With regards to upload I pretty much always hit my snch speed of 10Mb so that does not seem to be effected.

With regards to wiring I have a single Cat 5 going to the modem with no other lines in the house this is terminated where the splitter was installed by the Tech at the Demarc, so cabling is pretty mint I use VOIP so no use for any other lines to go anywhere. I am on the 8b profile and assume maybe when i plugged in the new Vigor I may have ended up on the 17a never checked hence the higher speeds, the whole DLM system seems a bit flawed to me and really before getting on the phone to Vodafone and pulling my hair out I thought I would try here and see what people thought. I am in no way expecting the results to be right up with the line speed by just about half seems wrong. I deal with VDSL connections to a certain extend on a day to day and all the ones I have tested seem to hit the sync pretty much give or take.

Thanks in advance

Profile State UP Speed Down Speed SNR Upstream SNR Downstream   8B SHOWTIME 10340 (Kbps) 45316 (Kbps) 21 (0.1dB) 10 (0.1dB)  


Todays results


https://www.speedtest.net/my-result/3482874115

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  # 1037572 6-May-2014 10:38
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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.



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  # 1037586 6-May-2014 10:43
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If this is over WiFi in some cases we have found that
When we it negotiates 20mhz it doesn't get more than 28Mbps. Please compare there results side by side with Ethernet and provide a trace route to trade me on both. Cheers

 
 
 
 




6 posts

Wannabe Geek


  # 1037597 6-May-2014 10:51
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Well that has to be the fatest response ever, an it seems you are right I run a Ubiquity AP and everything is wireless bar a 2012 Server i ran the test from that and got over 40Mb? see below. Can you explain more about the 20mhz assume this is to do with the Ubiquity?

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  # 1037607 6-May-2014 10:59
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sdykes: Well that has to be the fatest response ever, an it seems you are right I run a Ubiquity AP and everything is wireless bar a 2012 Server i ran the test from that and got over 40Mb? see below. Can you explain more about the 20mhz assume this is to do with the Ubiquity?


One of the tier 3 guys looked into it. I have tried everything you can think of at home. I run a fritzbox and tried a hg659 2 drayteks running a seporate ap etc and never crested 28mbps on WiFi on 20mhz. Now I can't negotiate 40mhz at home that well but at places that I have seen it on 40mhz they hit line sync. It was a while ago now but it was along the lines of DSL modulation and packet transfer between the DSL module and WiFi module.



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Wannabe Geek


  # 1037636 6-May-2014 11:18
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Bit interesting, wonder if it would make a difference if you where on 5ghz. I have changed to 40MHZ on the Ubiquity however I am not sure if my laptop is picking this up. I have changed the card to auto for this but still getting the same results. Think this is going to be a bit of a challenge now :-)

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  # 1037639 6-May-2014 11:22
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sdykes: Bit interesting, wonder if it would make a difference if you where on 5ghz. I have changed to 40MHZ on the Ubiquity however I am not sure if my laptop is picking this up. I have changed the card to auto for this but still getting the same results. Think this is going to be a bit of a challenge now :-)


Superior technology called "Ethernet" Might want to invest in that if you value speed and ping times. WiFi is a convenience technology and no more.
Ill mess around with mine again and see where it lands me. Ill update further.

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  # 1037837 6-May-2014 16:56
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those attenuation figures, are they the SNR figures or the actual up and down figures. the layout is confusing

the whole DLM system seems a bit flawed to me


why do you say that? it tries to give you the best possible ping time and the best possible download/upload speed. it generally has to sacrifice download speed a little to give you a better ping.

As for 17a vs 8b, that's all down to your attenuation/distance from the exchange

there is nothing flawed in it.

 
 
 
 




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Wannabe Geek


  # 1037889 6-May-2014 18:28
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Given the response this is not a DLM issue it relates to my wirless and its inability to send traffic faster than the 28MB so I can't blame DLM. If I cable up I get 43Mb down and 10Mb up just seems like a bit of a have wirless when even with pretty good gear i can't acheive the same. If I sit under the Ubiquity I get 33M ish so better but still. Think it might be time to get the cabling tool out and cable a few things up.

What I would be interested in is if anyone else is seeing the same results with VDSL and wireless...

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  # 1037893 6-May-2014 18:39
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sdykes: Given the response this is not a DLM issue it relates to my wirless and its inability to send traffic faster than the 28MB so I can't blame DLM. If I cable up I get 43Mb down and 10Mb up just seems like a bit of a have wirless when even with pretty good gear i can't acheive the same. If I sit under the Ubiquity I get 33M ish so better but still. Think it might be time to get the cabling tool out and cable a few things up.

What I would be interested in is if anyone else is seeing the same results with VDSL and wireless...


Me and a handful of friends on VDSL

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  # 1037903 6-May-2014 19:12
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i do as well, i can hit 36Mbps on the I-Pad and about 25-28 through my android devices. They all connect to the wireless network at 65Mbps. I think the ipad handles the speedtest better than android. im connected at 62Mbit and have a 802.11n router capable of 150Mbit. hardly any of my devices support that speed though.

wireless will generally go at about 60% of the connected speed due to the overhead required.

a busy area will slow the speeds down more.

you want faster speeds get a 5ghz router with 802.11ac or use a wired connected.

wireless isnt a "have" a lot of people including yourself by the looks of it think they should get super speeds from wifi but they know little of how the technology works and that its very very susceptible to interference. not to mention the overheads involved and the different technologys under the 802.11 heading.

stolen from another thread
sbiddle:
WiFi is a complementary offering to Ethernet, it is not, can not, and never will be a replacement.


you want fast speeds use a cable

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  # 1037910 6-May-2014 19:37
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Jase2985: i do as well, i can hit 36Mbps on the I-Pad and about 25-28 through my android devices. They all connect to the wireless network at 65Mbps. I think the ipad handles the speedtest better than android. im connected at 62Mbit and have a 802.11n router capable of 150Mbit. hardly any of my devices support that speed though.

wireless will generally go at about 60% of the connected speed due to the overhead required.

a busy area will slow the speeds down more.

you want faster speeds get a 5ghz router with 802.11ac or use a wired connected.

wireless isnt a "have" a lot of people including yourself by the looks of it think they should get super speeds from wifi but they know little of how the technology works and that its very very susceptible to interference. not to mention the overheads involved and the different technologys under the 802.11 heading.

stolen from another thread
sbiddle:
WiFi is a complementary offering to Ethernet, it is not, can not, and never will be a replacement.


you want fast speeds use a cable


Overhead was the word i was looking for earlier. People dont understand that usually over a DSL technology you will get 16-26Mbp/s over WiFi to a WAN location. VDSL has introduced faster speeds so people actually notice the difference.



6 posts

Wannabe Geek


  # 1037979 6-May-2014 21:40
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I think people are missing the point here. The issue is not with the inherent slow speed one acheives through wirless but the combination of wireless through VDSL. I can copy a 3Gb file at 8-9Mb/s with my wireless to my server where I am sitting at the moment yet with a speed test over the internet I will only achieve 3Mb/s at best. The point is this is a fault that is created with transfer over DSL. if I transfer with the same laptop via the same ubiquity over a cable connection the speeds are as to be expected nice and high . TimA has correctly identified the problem just really want to know why it occurs??

Think people should really read the whole post before making a comment to ensure the fully understand what is been asked.


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  # 1037981 6-May-2014 21:45
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sdykes: I think people are missing the point here. The issue is not with the inherent slow speed one acheives through wirless but the combination of wireless through VDSL. I can copy a 3Gb file at 8-9Mb/s with my wireless to my server where I am sitting at the moment yet with a speed test over the internet I will only achieve 3Mb/s at best. The point is this is a fault that is created with transfer over DSL. if I transfer with the same laptop via the same ubiquity over a cable connection the speeds are as to be expected nice and high . TimA has correctly identified the problem just really want to know why it occurs??

Think people should really read the whole post before making a comment to ensure the fully understand what is been asked.



Hi,

Due to overheads and the modulation of a DSL technology to a radio technology a standard modem will load up pretty easily. WiFi environment and radio interfearence is the big player. You asked WHY too. @sbiddle

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  # 1038040 7-May-2014 06:03
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im pretty sure there is less data overhead in local environment than when using the internet.

because the packets don't need to contain as much info.

you would have the same issue with UFB

you would never notice it with ADSL as you wouldnt be able to max it out, the advancement of xdsl connections has caught up with older wireless technology to the point where it is slowed down

upgrade you wireless router to a fancy AC unit and make sure all your devices only run on that tech if you really want every last drop of your connection speed over wireless

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  # 1038128 7-May-2014 09:37
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sdykes:  TimA has correctly identified the problem just really want to know why it occurs??



I would assume the router can't cope with the traffic. I was getting ~50Mbps wifi throughput over a ~60Mbps VDSL connection, but that was using an Asus RT-AC66U as the wifi access point, with a Draytek DV130 bridged as the VDSL modem. There's no inherent "Wifi -> VDSL = slow". Using the same RT-AC66U, I can now get ~80Mbps throughput via Wifi over 100Mbps UFB.

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