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


23 posts


#26129 12-Sep-2008 15:31
Send private message

Hi guys, just a general query regarding why my speed tests results seem to be slow based on my Line Attenuation. See below for the relevant info:

ISP Details:

ISP: Vodafone
Plan: Ultimate (Max/Max)

Router Details:
Linksys WAG200G (with latest firmware)
DSL Status: Connected
DSL Modulation Mode: MultiMode
DSL Path Mode: Interleaved
Downstream Rate: 7616 kbps
Upstream Rate: 704 kbps
Downstream Margin: 19 db
Upstream Margin: 12 db
Downstream Line Attenuation: 4 db
Upstream Line Attenuation: 1 db
Downstream Transmit Power: 11 db
Upstream Transmit Power: 9 db

Speedtest Results (Sun 4:30pm):
Download Speed: 3033 kbps (379.1 KB/sec transfer rate)
Upload Speed: 596 kbps (74.5 KB/sec transfer rate)
Latency: 48 ms

I've tested the speeds at varying times of the night and day and have not managed to get above 3250 kbps Down. Also of note the test above was done on an ethernet connection rather than wireless with no telephone extension cords used.

One last thing that may be affecting my speeds is my house is relatively new (4 years) and was connected with fibre-optic (I think). Also used to have a monitored alarm with AlarmNZ but got their technician to re-wire for broadband.

I'm connected through the Massey Exchange (I believe) but I'm right on the outskirts of this, Scenic Drive between Kitewaho Road and Te Henga Road. Looking at the cabinet info on the thread " think i got cabinetised..." I'm outside of a cabinetised area so should in theory be able to connect up to Vodafone Red Network but then is it going to increase my speeds any?

Any suggestion appreciated, thanks.

Create new topic
4029 posts

Uber Geek


  #164041 12-Sep-2008 17:12
Send private message

You're syncing at near full speed ADSL1 so any issues with speed you're having are likely to be on vodafone's end. The line they give you about things like congestion etc affecting your speed is true, speed depends on many things such as how much bandwidth they purchase, which Orcon doesn't seem to be able to get right. Different ISP's can give different speeds to different servers, after switching to Telstraclear from vodafone my latency decreased and my average speed increased for example

If you want a real maximum test of speed the best way to do it is off a fast server, eg Microsoft who uses Akamai, and download a file using a download manager set to open multiple connections and split the file up. I only get around 6000kb/s on a speedtest but 10000kb/s using a download manager.


Trade NZ and US shares and funds with Sharesies (affiliate link).
3308 posts

Uber Geek

Lifetime subscriber

  #164043 12-Sep-2008 17:24
Send private message

Go to and run the TCPIP Analyzer. Compare with below results.

« TCP Analyzer Results »
Tested on: 09.12.2008 01:18
IP address:
TCP options string: 020405b40103030301010402
MSS: 1460
MTU: 1500
TCP Window: 513920 (multiple of MSS)
RWIN Scaling: 3
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920
BDP limit (200ms): 20557kbps (2570KBytes/s)
BDP limit (500ms): 8223kbps (1028KBytes/s)
MTU Discovery: ON
TTL: 45
Timestamps: OFF
IP ToS: 00000000 (0)

Spark Max Fibre using Mikrotik CCR1009-8G-1S-1S+, CRS125-24G-1S, Unifi UAP, U6-Pro, UAP-AC-M-Pro, Apple TV 4K (2022), Apple TV 4K (2017), iPad Air 1st gen, iPad Air 4th gen, iPhone 13, SkyNZ3151 (the white box). If it doesn't move then it's data cabled.


23 posts


  #164101 12-Sep-2008 20:37
Send private message

Thanks for the replys. My results from SpeedGuide are below with the main differences highlighted:

############ Original Results ############

« TCP Analyzer Results »
Tested on: 09.12.2008 03:57
IP address: 118.93.xx.xx
TCP options string: 020405b401010402
MSS: 1460
MTU: 1500
TCP Window: 17520 (multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 17520

Recommended RWINs: 64240, 128480, 256960, 513920
BDP limit (200ms): 701kbps (88KBytes/s)
BDP limit (500ms): 280kbps (35KBytes/s)
MTU Discovery: ON
TTL: 115
Timestamps: OFF
IP ToS: 00000000 (0)

Looking at it and reading some more info maybe the RWIN value was reducing my down speed so I optimised the settings and ran the test again.

############ Optimised Results ############

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 256960 (multiple of MSS)
RWIN Scaling: 2
Unscaled RWIN : 64240

Recommended RWINs: 64240, 128480, 256960, 513920
BDP limit (200ms): 10278kbps (1285KBytes/s)
BDP limit (500ms): 4111kbps (514KBytes/s)
MTU Discovery: ON
TTL: 51
Timestamps: OFF
IP ToS: 00000000 (0)

Still no change to Download speed however, although I am checking in peak times at the moment, Will check again during off-peak.

Speedtest Results (Fri 8:30pm):
Download Speed: 2875 kbps (359.4 KB/sec transfer rate)
Upload Speed: 567 kbps (70.9 KB/sec transfer rate)
Latency: 50 ms

6093 posts

Uber Geek

Lifetime subscriber

  #164172 13-Sep-2008 10:46
Send private message

Hi Gareth,

You will be connected to a roadside cabinet, most likely the one at the beginning of Waitakere Rd. You will not be able to get on Vodafone's Red network for quite some time; i.e. after sub-loop unbundling.
The mostly likely issue affecting your maximum speed is the feed to that cabinet; many of these earlier cabinets are feed by a 2 or 4 Mbps link; therefore you result maxing out as it does.

Rural IT and Broadband support.


Broadband troubleshooting and master filter installs.
Starlink installer - one month free: 
Wi-Fi and networking
Cel-Fi supply and installer - boost your mobile phone coverage legally


Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com


23 posts


  #164410 14-Sep-2008 23:08
Send private message

Hi Fraser,

Thanks for the input, its always good to get someone elses knowledge on the subject.

There is a cabinet just prior to Te Henga Road, about 20 meters from my house that is not included in the cabinetised areas indicated on the thread "I think i got cabinetised..." I was wondering if this is what I'm connected to due to the low attenuation rates I'm seeing on my router.

Even with the sub-loop unbundling would this help me out as doesn't this just enable the other telcos to install their equipment into the cabinets and therefore the feed connecting the cabinet is still going to limit my downloads?


8961 posts

Uber Geek

ID Verified

  #164435 15-Sep-2008 07:37
Send private message

The older cabinets as you would appear to be connected to, have Conklin DSLAMs in them that only support a single or dual E1 uplink, hence a maximum rate of 4Mb/s for the uplink from the cabinet. If not on the list for the current cabnetisation plan then its possible it will be sometime before it gets upgraded either by Telecom for its use or the still to be determined sub loop unbundling.


Create new topic

News and reviews »

Synology Introduces BeeStation
Posted 23-Feb-2024 14:14

New One UI 6.1 Update Brings Galaxy AI to More Galaxy Devices
Posted 23-Feb-2024 10:50

Amazon Echo Hub Available in New Zealand
Posted 23-Feb-2024 10:40

InternetNZ Releases Internet Insights 2023
Posted 20-Feb-2024 10:31

Seagate Adds 24TB IronWolf Pro Hard Drives for Multi-user Commercial and Enterprise RAID Storage Solutions
Posted 19-Feb-2024 16:54

Seagate Skyhawk AI 24TB Elevates Edge Security Capacity and Performance
Posted 9-Feb-2024 17:18

GoPro Releases Quik Desktop App for macOS and Introduces Premium+ Subscription Tier
Posted 9-Feb-2024 17:14

Ring Introduces New Ring Battery Video Doorbell Pro
Posted 9-Feb-2024 16:51

Galaxy AI Transforms the new Galaxy S24 Series
Posted 18-Jan-2024 07:00

D-Link launches AI-Powered Aquila Pro M30 Wi-Fi 6 Mesh Systems
Posted 17-Jan-2024 20:02

Newest LG 4K Lifestyle Projector Doubles as Art Objet
Posted 9-Jan-2024 15:50

More LG Smart TV Owners Set To Enjoy the Latest webOS Upgrade
Posted 9-Jan-2024 15:45

Panasonic Announces the Z95A and Z93A With Fire TV Built In
Posted 9-Jan-2024 15:30

Amazon Echo Pop Review
Posted 8-Jan-2024 14:22

Samsung Tab S9 FE Review
Posted 17-Dec-2023 08:26

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.

Backblaze unlimited backup