Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


53 posts

Master Geek


Topic # 26136 12-Sep-2008 22:34
Send private message

I've just found out that changing my current plan from FS/128 should increase my current download speed depending on line attenuation and the SNR margin. My DL502T is showing connecting at ADSL2+ so it looks like it might be time to upgrade my plan first and then maybe the modem.

Can anyone give me an idea of the speeds I could expect if I upgraded to FS/FS? Currently I'm getting:

Item

DownstreamUpstreamUnit
SNR Margin1231dB
Line Attenuation4327dB
Data Rate3998165kbps

And what about if I get the Linksys WAG160N? Will this improve the ADSL2+ performance?

Thanks,
Mark


Create new topic
6198 posts

Uber Geek
+1 received by user: 251

Trusted
Subscriber

  Reply # 164162 13-Sep-2008 10:11
Send private message

Hi, normally a 128k uplink will limit the down to around 4.5Mb/s due to the rate at which ACKs can be returned, so based on your sync rate there may be little advantage in either moving to ADSL2+ nor FS/FS.

Typically over 40-45dB attenuation ADSL2+ shows no speed increase over ADSL1 and often behaves in a less stable manner.

That said, for you attenuation and noise margin you should expect potentially better sync speeds than you currently have, a figure closer to 6Mb/s should be possible. Things to look at are your home wiring, investing in a central filter may be worth while, and different modems work better. The WAG160 is supposed to be a good router, but as with most Linksys modem the ADSL part leave a lot to be desired. I would go for a modem with a Broadcom chipset in it for longer lines, this includes TP-Link, DynaLinks, and most DSE routers such as the XH9949 and XH9950, these latter two are both TP-Link rebadges and I have had very good success with them especially on longer lines, and well priced.


Cyril

Edit just changed the above from Dlink to DynaLink. Dlink dont use Broadcom chipsets Dynalink do.



53 posts

Master Geek


  Reply # 164179 13-Sep-2008 11:46
Send private message

Thanks Cyril,

so my best bet would be to look at the the modem and wiring first and see if I can get that up to 4.5Mb/s? And then look at upgrading to the fs/fs plan?

Cheers,
Mark

4025 posts

Uber Geek
+1 received by user: 1076

Trusted

  Reply # 164184 13-Sep-2008 12:01
Send private message

Yes. Central Splitter first if you have bad/a lot of wiring, then look at changing plans.

2451 posts

Uber Geek
+1 received by user: 287


  Reply # 164191 13-Sep-2008 12:12
Send private message

My 502T showed ADSL2+ but never more than 7.6Mbps line speed or just over 3Mbps download. A Thomson 536 went to 11Mbps line speed and at the right time will show a bit more than 4.5Mbps download. Flash based tests even higher ???

Overall this isn't noticable day to day.

6198 posts

Uber Geek
+1 received by user: 251

Trusted
Subscriber

  Reply # 164198 13-Sep-2008 12:38
Send private message

First generation Dlinks (like the 502) would indicated they were on ADSL2+ but not give more than 8Mb/s, this was a known issue, 2nd gen fixed this (I think), regardless gives you good reason to avoid.

That all said, 3.5Mb/s on 43dB attenuation is a bit under par, things attenuation and noise margin dont indicate is issues related to nodal echos in your house wiring due to star stubs producing echos, this can cause various bins (carriers) and groups of bins to get distorted and therefore not used thus producing a lower sync rate than should be possible. The only solution to this is to use a central filter, even using micro filters on each and every phone point will not help this issue.

Cyril



53 posts

Master Geek


  Reply # 164206 13-Sep-2008 13:13
Send private message

Thanks everyone for your help. I'm a bit confused about the central filter though. Our broadband was originally wired for one jackpoint, I think the technician installed a splitter or something. Is this the same as a central filter or do I need to do something else?

Cheers,
Mark

58 posts

Master Geek


  Reply # 165955 21-Sep-2008 11:29
Send private message

cyril7: limit the down to around 4.5Mb/s due to the rate at which ACKs can be returned

Is it possible to change the length of time when the ACKS are sent to a longer period so you can get more speed without upgrading to FS/FS?

130 posts

Master Geek
+1 received by user: 1


  Reply # 165957 21-Sep-2008 11:35
Send private message

Hold on people.  Are the figures above sync rates or data rates?  You may want to re-visit your replies.  

4025 posts

Uber Geek
+1 received by user: 1076

Trusted

  Reply # 165972 21-Sep-2008 12:10
Send private message

mch_nz: Thanks everyone for your help. I'm a bit confused about the central filter though. Our broadband was originally wired for one jackpoint, I think the technician installed a splitter or something. Is this the same as a central filter or do I need to do something else?

Cheers,
Mark

You already have one then. Hmmm, you must be on a long 3-4km line.



53 posts

Master Geek


  Reply # 166034 21-Sep-2008 14:21
Send private message

eXDee:
mch_nz: Thanks everyone for your help. I'm a bit confused about the central filter though. Our broadband was originally wired for one jackpoint, I think the technician installed a splitter or something. Is this the same as a central filter or do I need to do something else?

Cheers,
Mark

You already have one then. Hmmm, you must be on a long 3-4km line.


Yep. And I read in the local paper that we aren't scheduled for cabinetisation until 2011... So would one of the Broadcom chipset modems be worth while getting? Or would the FS/FS make a difference? Or should I just wait and cope?

Cheers,
Mark

Mad Scientist
18615 posts

Uber Geek
+1 received by user: 2365

Trusted
Lifetime subscriber

  Reply # 166362 22-Sep-2008 19:37
Send private message

w fs/128 i got 4mbps/130kbps and torrent downloads (if that's what you mean) of 100kBps
w fs/fs i get 9mbps/600kbps and torrent downloads of 250kBps

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Microsoft Dynamics 365 Business Central launches
Posted 10-Jul-2018 10:40


Spark completes first milestone in voice platform upgrade
Posted 10-Jul-2018 09:36


Microsoft ices heated developers
Posted 6-Jul-2018 20:16


PB Technologies charged for its extended warranties and warned for bait advertising
Posted 3-Jul-2018 15:45


Almost 20,000 people claim credits from Spark
Posted 29-Jun-2018 10:40


Cove sells NZ's first insurance policy via chatbot
Posted 25-Jun-2018 10:04


N4L helping TAKA Trust bridge the digital divide for Lower Hutt students
Posted 18-Jun-2018 13:08


Winners Announced for 2018 CIO Awards
Posted 18-Jun-2018 13:03


Logitech Rally sets new standard for USB-connected video conference cameras
Posted 18-Jun-2018 09:27


Russell Stanners steps down as Vodafone NZ CEO
Posted 12-Jun-2018 09:13


Intergen recognised as 2018 Microsoft Country Partner of the Year for New Zealand
Posted 12-Jun-2018 08:00


Finalists Announced For Microsoft NZ Partner Awards
Posted 6-Jun-2018 15:12


Vocus Group and Vodafone announce joint venture to accelerate fibre innovation
Posted 5-Jun-2018 10:52


Kogan.com to launch Kogan Mobile in New Zealand
Posted 4-Jun-2018 14:34


Enable doubles fibre broadband speeds for its most popular wholesale service in Christchurch
Posted 2-Jun-2018 20:07



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.