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Topic # 56688 21-Jan-2010 04:09
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and the sync rate has gone from 2.2~2.7Mbps to 14.7Mbps which even though faster would seem a little low only being 300mtr from the cabinet it twould seem one needs to be right on top of it to get nearer 20Mbps here's the NetComm NB5Plus4 stats

Modem Status
Connection Status Connected
Us Rate (Kbps) 894
Ds Rate (Kbps) 14226
US Margin 11
DS Margin 11
Trained Modulation ADSL_2plus
LOS Errors 0
DS Line Attenuation 8
US Line Attenuation 3
Peak Cell Rate 2108 cells per sec
CRC Rx Fast 0
CRC Tx Fast 0
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Interleaved


DSL Statistics
Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0

maybe i need to ask Orcon to turn off interleaving again

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  Reply # 291729 21-Jan-2010 09:17
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Are you 300 metres from the cabinet or do you have 300 metres of wire between your modem and the cabinet? Big difference.

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  Reply # 291767 21-Jan-2010 10:08
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Hi, 8dB attenuation indicates near on 600m of cable assuming no other attenuating factors apply. Regardless I have an attenuation of 8.5dB and my broadcom based modem is syncing at 18Mb/s with reliable speedtests from Napier or Auckland of 15Mb/s.

Purhaps you could detail to us what your phone wiring layout is like, how many phone devices, alarms, faxs, Skyboxs etc and are they all filtered individually or with a central filter. Typically if you have filters on all your phone devices and star wiring then the very top end of the DSL spectrum is upset so you dont achieve the full speed that your line attenuation can support.

Also be aware that Telecom uses an 12dB Noise Margin target which means speeds much over 18Mb/s rarely happen unless you plugged straight into the cabinet. Orcon and Vodafones ULL networks however set their target for 6dB (which ADSL2 allows) and you can therefore get higher sync speeds albeit with less stability. Telecom have made a conservative approach to improve the stability of services at the sacrifice of some speed, an approach I think is reasonable.

Cheers
Cyril

 
 
 
 


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  Reply # 291995 21-Jan-2010 18:22
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the Ph wiring comes in from the little grey box out front and straight into the PH jack on the wall there's no demarcation point outside (i know confused the hell out of the corus tech too)... hmmmm i walked the distance between me and the cabinet and it's roughly 300mtrs give or take 2~3mtr i can't remeber which com chip is in the NetComm

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  Reply # 291998 21-Jan-2010 18:44
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Nice. Could you post some speedtest results (national & international). My cabinet is upgrading on 12th Feb 2010. Not too long to go.




Do whatever you want to do man.

  

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  Reply # 292003 21-Jan-2010 19:04
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Hi, ok well the 300kHz attenuation test indicates that there is 500-600m of cable as measured by the modem, which by and large are pretty accurate, so there is goes.

And from what you say the line goes from the street to the modem with no taps off anywhere or other phone devices across the line.

Cyril

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  Reply # 292014 21-Jan-2010 19:58
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Athlonite: the Ph wiring comes in from the little grey box out front and straight into the PH jack on the wall there's no demarcation point outside (i know confused the hell out of the corus tech too)... hmmmm i walked the distance between me and the cabinet and it's roughly 300mtrs give or take 2~3mtr i can't remeber which com chip is in the NetComm


Rough guide is to take the actual as the crow flys distance from you to the exchange and multiply it by 1.8.

So in your case it would be around 500-600m, which as Cryil says is what your attenuation is saying.


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  Reply # 292056 22-Jan-2010 00:02
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WTB cabinetisation at home... April 2011... QQ



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  Reply # 299990 18-Feb-2010 00:23
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@ Ragnor mine said october 2010 for cabinetisation so i'm quite surprised too to be up and going 10mths before the scheduled upgrade Corus have really pulled finger round here they're popping like mushrooms



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  Reply # 299991 18-Feb-2010 00:27
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not bad considering just in december i was only getting just above 2mbps


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  Reply # 300027 18-Feb-2010 08:49
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Was also cabinetized on Monday. ADSL would not work after that on my Orcon Home hub. ADSL LED kept flashing fast then slow as it was unable to sync. Swapped it out for my old DSE ADSL 1 router and it came up file. Sending the Homehub back to Orcon for a look.

Info from DSE reouter before upgrade
Down --------- ------Up  
SNR 11.9 ----------- 31  
Line atten 51.1---  27.0 
datarate 3360 ------160  

cabinetized
Down -----------------Up  
SNR 13.6 -------------12  
Line Attn 9.1 ---------6.0  
datarate 7616 -------768  

Real world speed test is about 3.5Mbits with the old router.

There was some thought from Orcon when I logged the fault that I was too close to the cabinet. It's about 300 meters.

Router problem or cabinetization problem.??





Regards,

Old3eyes


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  Reply # 300067 18-Feb-2010 10:45
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If you are on Orcon+:
 
http://www.orcon.net.nz/about/article/cabinetisation_what_does_it_mean_for_orcon_customers

The issue is your connection is being passed through to Orcon's equipment in the exchange as they don't have any equipment in the cabinets. It's worse than before the cabinet because of an interference issue called "mid span injection".. ie: the stronger signals from the cabinet for other lines/connections mess with the signal strength of your line/connection.

Basically they will need to move you to be provided over Telecom Wholesale equipment rather than their own LLU gear for you to get the expected sync speed from being that close to the cabinet.


If you are not on Orcon+ ignore everything I just said and get them to log a line fault.




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  Reply # 300101 18-Feb-2010 12:31
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cabinetized
Down -----------------Up
SNR 13.6 -------------12
Line Attn 9.1 ---------6.0
datarate 7616 -------768


Those stats look good for an ADSL1 modem. ADSL1 will only give you 8mbit of downstram sync. Unsure why your homehub isn't syncing though, that does seem very strange.

What tests showed you with real world speed of 3.5mbit?




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  Reply # 300102 18-Feb-2010 12:36
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My cabinet was being worked on 12th feb as per chorus schedule and there were 2 workers working there too. But it's been a week since then and still no ADSL2+ switch. How long do they generally take to turn it on?




Do whatever you want to do man.

  

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  Reply # 300165 18-Feb-2010 16:30
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They take quite a while to fully commission the cabinets.

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  Reply # 300213 18-Feb-2010 19:25
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Sounddude: cabinetized
Down -----------------Up
SNR 13.6 -------------12
Line Attn 9.1 ---------6.0
datarate 7616 -------768


Those stats look good for an ADSL1 modem. ADSL1 will only give you 8mbit of downstram sync. Unsure why your homehub isn't syncing though, that does seem very strange.

What tests showed you with real world speed of 3.5mbit?




https://www.speedtest.net/result/720556468.png 



Tonite it's under  3 Mbits. How do you  copy the image to  reply??

 

Tested it on wifeys  laptop and it shows 5.2Mbits.  Guess my PC is due to be retired..




Regards,

Old3eyes


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