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43 posts

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# 41601 19-Sep-2009 15:59
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Hi i am now about 120 meters away from a cabenit tha has aparently allready been upgraded i would like to know why my line speed is still so low and if i am on the cvabenit or still on the mane exckange about 2.5 km away. I am on Xnet naked dsl

my stats look like this




DSL Status:
Connected


DSL Modulation Mode:
ADSL2+


DSL Path Mode:
Interleaved


Downstream Rate:
7547 kbps


Upstream Rate:
600 kbps


Downstream Margin:
30 db


Upstream Margin:
12 db


Downstream Line Attenuation:
3 db


Upstream Line Attenuation:
0.5 db


Downstream Transmit Power:
12 db


Upstream Transmit Power:
8 db



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  # 257049 19-Sep-2009 16:23
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And you are using a Dlink 502T??




Ross

 

Spark FibreMAX using Mikrotik CCR1009-8G-1S-1S+

 


Speed Test


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  # 257110 19-Sep-2009 22:07
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Hi, 3dB downstream attenuation implies 200m of cable, so if you are not achieving 18Mb/s or there abouts then I would suggest you have dodgy house wiring, or most lilkely a modem that does not support ADSL2+ correctly, as Ross says, its not a gen1 Dlink by any chance, these are known to think they do 2+ but can only sync to around 7.6Mb/s max.

On a 2nd glance at your stats the 600kb/s upstream may definitely point to issues in your house wiring, are there filters on EVERY phone, fax, SkySTB, or Alarm system in the house, have you tried an isolation test, ie remove evey phone device from the line and connect your modem at the phone point closets the entry to the house.

Cyril

 
 
 
 




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Geek


  # 257136 20-Sep-2009 07:27
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Thank for your comments

And you are using a Dlink 502T??


I am using a Linksys WAG200

cyril7: Hi, 3dB downstream attenuation implies 200m of cable


Thanks I did somehow know that 3db = didtance of 200m or so thanks for confirming

are there filters on EVERY phone, fax, SkySTB, or Alarm system in the house, have you tried an isolation test, ie remove evey phone device from the line and connect your modem at the phone point closets the entry to the house.


The only device pluged into my phone line is my router as
I am on Xnet naked dsl




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  # 257146 20-Sep-2009 08:54
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Hi, my suggestion from here is that you have a complete isolation test done at the demarc, (ie the point where the line transitions from the black polyethelene lead in to the house me), this also requires that the cable is disconnected from the house wiring so nothing else is connected.

I know you have told me nothing else is connected, but I could not tell you the number of times I get called to a house to sort out ADSL wiring issues and the owner swears black and blue that there is only one point connected, and once there we find all manner of historic wiring they had no idea was existant, so you might what to have a good check that there is not an old ringer or some old stuff.

The WAG is not my choice of modem, but there is a whole thread on the vodafone forum of folk using voda supplied Huewai modems that have a similar issue where they are syncing at the full normal rate but only registering 7.6Mb/s of usable rate, you may have a similar issue. The cause I think is still being investigated by Telecom although it seems to be a mix of DSLAM port config and what modem you are using so changing modems to a Broadcom based one (TP-Link, Dynalink, DSE) may be an option worth trying.

I suggest at this point once you have confirmed its not your wiring that you raise it with Xnet who will raise a ticket with Chorus and get them to sort it out.

Cyril

Edit, also be aware that if you are on Xnet Flood (dont know if you can with naked) then its limited to ADSL1 speeds, which means 7.6Mb/s as your modem reports, this infact could well be your issue.

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  # 257193 20-Sep-2009 15:22
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If you haven't reset your router, the new speed won't take effect.



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  # 257249 20-Sep-2009 21:18
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I have not had the chance to do i full isolation test yet. but i will do soon and poast updates.

I have  tryed reseting my modem and changing modes

thanks>



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# 257384 21-Sep-2009 17:26
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after isolation test

DSL Status: Connected
DSL Modulation Mode: G.dmt
DSL Path Mode: Interleaved
Downstream Rate: 7584 kbps
Upstream Rate: 640 kbps
Downstream Margin: 17 db
Upstream Margin: 12 db
Downstream Line Attenuation: 0 db
Upstream Line Attenuation: 0 db
Downstream Transmit Power: 12 db
Upstream Transmit Power: 7 db

will not train on adsl 2

DSL Status:      Connected
DSL Modulation Mode:     ADSL2+ DSL
Path Mode:     Interleaved
Downstream Rate:     7547 kbps
Upstream Rate:     544 kbps
Downstream Margin:     31 db
Upstream Margin:     12 db
Downstream Line Attenuation:     3 db
Upstream Line Attenuation:     0 db
Downstream Transmit Power:     12 db
Upstream Transmit Power:     8 db


next step run a 20m cabe out to the cable joint at the road side and test it there as my house is 100years old and owned by dodgey Asians so who knows if ther is a dodgey joint under the house (I located the point with the black under ground cabee and disconected it & conected my modem to it)

 
 
 
 


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  # 257388 21-Sep-2009 17:40
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Hmmm, interesting its running on ADSL1, I think I would be hunting around for a different modem, maybe a basic DSE XH9949 ($49 today only save $20) and with DSEs return policy return it if its not what you want just keep all the paper work and packaging so it can be reshelved like new. If it fixs your problem then you can keep it and use the WAG for as a switch/AP

Failing all this I you may have a bad port config, this can only be fixed by Telecom via Xnet

Cyril



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Geek


  # 257391 21-Sep-2009 17:46
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thanks i may jut do the but i forgot to poast the adsl2+ stats that i just added to my last poast & yes it allways has beter speed on adsl1 so who knows



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Geek


  # 257659 22-Sep-2009 20:45
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i got a DSE XH9949 and

Mode:                  ADSL2+
Line Coding:         Trellis On
Status:                 No Defect
Link Power State:   L0
 
                                    Downstream     Upstream
SNR Margin (dB):            12.3                13.4
Attenuation (dB):            3.0                 2.2
Output Power (dBm):       0.0                 12.8
Attainable Rate (Kbps):   23060             984
Rate (Kbps):                  19519             956



so why do modems sold as "adsl2+ compatable up 24Mbps " not proform?

but now i know thanks for the help

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  # 257674 22-Sep-2009 22:24
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Hi, glad you are happy with the result, the Broadcom chipsets (as used in the TP-Link which the DSE is a rebadge) is the best suited chipset to the ISAM. All the modems Telecom provide are Broadcom based.

Linksys have not made good modems for years.

If you use the WAG in layer2 bridge you can still use it as your WiFi AP.

Cyril

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