Sync speed with Iconz and possible improvements

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#676313 24-Aug-2012 10:32

Hi AgentK, just to confirm I am also on the Karori exchange (direct, not through a cabinet) and about 9 houses outside the VDSL area.

I'm getting 17208 down and 945 up, with no master filter installed. Our wiring will date from house construction in the early 80's - so yes following the advice about possibly swapping the 604T and/or master filter sounds like a good idea. I'm using a TP-Link TD-W8960N by the way.

arnies

525 posts

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#676970 25-Aug-2012 22:31

Hey I'm in Karori too, with Slingshot.
I'm a road or two out of the VDSL area and here are my sync speeds:
Line Rate - Upstream (Kbps):873Line Rate - Downstream (Kbps):10724

Should i expect any better?

cyril7

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#677015 26-Aug-2012 08:47

Hi Sean, whats the reported downstream attenuation figure that will give a better guide.

Cyril

arnies

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#677113 26-Aug-2012 14:04

cyril7

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#677380 27-Aug-2012 07:45

Hi, 24dB is a bit higher than I would expect in those areas, that would indicate near on 2km of cable, which could be true, but the density of cabinets in that area should have reduced that. So either it is true your in which case the at best you could obtain something closer to the attainable rate (around 13Mb/s) if properly filtered or its artificially high due to poor wiring in which case it could be significantly better.

I personally would say its worth a crack if you want to ring the last kb/s out of the line, a master filter (or if naked creating a single line situation) is the only way to assure optimum speed, anything else will only leave you guessing.

Cyril

arnies

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Ultimate Geek

#677615 27-Aug-2012 13:47

Is there a map of cabinets anywhere so i can determine if it is 2km away?

AgentK

34 posts

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#677656 27-Aug-2012 15:09

cyril7: Hi, how practical with simple wiring tasks, its not actually hard to install, the hardest part is to identify how your wiring is layed out.

Maybe even tell us about the wiring as you understand it now.

Cyril

Lol, my wiring/hardware skills are not worth mentioning, I'll def. get someone to do that for me :)

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AgentK

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#677659 27-Aug-2012 15:17

Here's a quick update. I got my hands on a 2nd hand Netgear DG834G for a few days now and it consistently syncs at 8154 (or sometimes 8157) downstream and 945 upstream. Also replaced the in-line splitter.

It doesn't seem to make a difference re sync speed if I've got a phone in the phone output of the splitter or now.

Line Attenuation is 25/8-10 and SNR Margin 13/16 now.

So - this was def. already an improvement of some sort, will still try to get a master filter organised.

allan

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#677713 27-Aug-2012 16:55

arnies: Is there a map of cabinets anywhere so i can determine if it is 2km away?

Yes try - http://www.chorus.co.nz/service-availability-tool

AgentK

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#677731 27-Aug-2012 18:05

DravidDavid: I recently got a Netgear DG modem from TradeMe and flashed it with DG team's custom firmware. I highly recomend it. I am currently syncing at 17Mb/s compared to the stock settings on stock firmware which was maximum 13Mb/s at best.

The firmware gives you the option to adjust the SNR to tweak the settings for the best possible stable connection.

After the master splitter install, I highly recommend one of these modems. Stable under load too!

@DravidDavid Did you get the v1018 firmware? I just grabbed it for the Netgear DG834G I now have and it contains three different image files. Which one did you choose?

DravidDavid

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#677763 27-Aug-2012 19:13

AgentK:
@DravidDavid Did you get the v1018 firmware? I just grabbed it for the Netgear DG834G I now have and it contains three different image files. Which one did you choose?

I have The V4 modem. I think I just chose the image that was the largest out of the files it gave me. I believe the other files are different revisions of the same firmware.

Check underneath the DG834G modem and see what version it is (v1,v2,v3,v4) if you get it wrong, you could brick your modem and their recovery tool isn't the most intuitive of applications.

Otherwise, use the .img file that states it is an english firmware with the latest ADSL driver and you should be good.

When done, have a play in "Advanced ADSL settings" and adjust the SNR ratio. I have mine set on 1%. I have a good line though. If yours starts to crash when you adjust it down, adjust it back up until it is stable.

I managed to pump my line up to 16.9Mb/s from 13.4Mb/s. :)

AgentK

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#677782 27-Aug-2012 19:54

I have The V4 modem. I think I just chose the image that was the largest out of the files it gave me. I believe the other files are different revisions of the same firmware.

Check underneath the DG834G modem and see what version it is (v1,v2,v3,v4) if you get it wrong, you could brick your modem and their recovery tool isn't the most intuitive of applications.

Otherwise, use the .img file that states it is an english firmware with the latest ADSL driver and you should be good.

When done, have a play in "Advanced ADSL settings" and adjust the SNR ratio. I have mine set on 1%. I have a good line though. If yours starts to crash when you adjust it down, adjust it back up until it is stable.

I managed to pump my line up to 16.9Mb/s from 13.4Mb/s. :)

Yeah, I've got the v4 as well. In the firmware download, I had three different versions apparently just being different when it comes to the ASDL driver version. There was a v23o, a v26 and another v23 -> went with the v23o as from doing a bit on research a lot of people claimed to have had issues with the v26 driver.

Flashing and everything was fine and I also found the slider, but for me it doesn't make a difference at all. I tried settings from 100% down to 1%, the modem syncs just fine at exactly the 8157/945 as it was during the whole day. Very stable at even the 1%.

Interesting though - in the raw ADSL driver details with the DGTeam firmware it now shows the attainable speed (which is 14596 down if I understand it correctly):

/usr/sbin/adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 0
Channel: FAST, Upstream rate = 945 Kbps, Downstream rate = 8157 Kbps
Link Power State: L0
Mode: ADSL2+
Channel: Fast
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 12.8 16.2
Attn(dB): 25.0 10.1
Pwr(dBm): 19.7 12.4
Max(Kbps): 14596 945
Rate (Kbps): 8157 945

Guess it's def. time for the master filter now :)

DravidDavid

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#677832 27-Aug-2012 21:31

Funny you mention you had no success with the ADSL settings there....Because it was the same with me at first.

Then all of a sudden, I managed 3 extra Mb/s!

Not sure what happened. You may want to try flashing with the other firmwares after-all. When I get home from work, I will post the firmware I used to make sure it matches yours, since I've had no problems with it so far at all.

:)

DravidDavid

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#677895 27-Aug-2012 23:26

Update:

My router is using firmware: 5.01.16 Rev: 1018

Try installing this version if yours is different and test your results then :)

AgentK

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#677918 28-Aug-2012 07:24

DravidDavid: Update:

My router is using firmware: 5.01.16 Rev: 1018

Try installing this version if yours is different and test your results then :)

All three of them would be 1018, I suppose.

Could you check the field "ADSL Firmware Version" a bit further below on the Router Status page?

Mine says: A2pB023o.d20e there

The 023o might be 026 or 023<somethingelse> for you.

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