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311 posts

Ultimate Geek
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Topic # 57822 25-Feb-2010 18:28
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Hi,


I already am aware that if I'm on a limited 128kbps upload I won't be able to get more than 6-7mbps download, but I was wondering if I go to a full speed upload I will get better DSL sync speeds? 




Currently I have:






DSL Type:
G.992.5 annex A





Bandwidth (Up/Down) [kbps/kbps]:
164 / 5.199





Output Power (Up/Down) [dBm]:
12,0 / 16,5





Line Attenuation (Up/Down) [dB]:
25,0 / 43,0





SN Margin (Up/Down) [dB]:
36,5 / 12,0







I'm located in the Viaduct (Auckland) and my Line attenuation seems very high. I don't have any phones plugged in and I use a filter for the modem.




Thanks.

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6299 posts

Uber Geek
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  Reply # 302249 25-Feb-2010 18:37
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Hi, changing to a Fs/Fs plan will not make much diff to your download speed as its not much different, ie around 5Mb/s. Your attenuation of 43dB indicates around 3.5km of cable, which seems a little higher than I would have expected. I would have said a figure more like 2.5km max from Auckland central. But regardless you will be cabinetised around September 2011, so speeds will improve then.

That said I would do an isolation test to see if there is anything in your house/apartment wiring thats artificially inflating your attenuation.

Cyril



311 posts

Ultimate Geek
+1 received by user: 3


  Reply # 302251 25-Feb-2010 18:39
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Hi,
Thanks for the answer.

Not quite sure how to do the test isolation?

Cheers

6299 posts

Uber Geek
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  Reply # 302375 26-Feb-2010 08:23
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Hi, Basic Isolation test is to remove every POTS device (Plain Old Telephone Service), so phones, fax's Sky boxs, alarm systems etc, so that none are connected across the line, and the only thing that is connected is your DSL modem.

A more extensive and ideal isolation test is to disconnect all the house wiring at the demarc or first phone point that the line arrives at so that only that point is connected to the exchange, then connect your modem there and check.

Maybe a brief explanation of what POTs devices you have and if or not they have filters would be good.

Cheers
Cyril



311 posts

Ultimate Geek
+1 received by user: 3


  Reply # 302379 26-Feb-2010 08:32
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Hi,
I don't have anything plugged into telephone jacks (no phone, no sky, no alarm, nothing), I only have the DSL modem through a filter.
I used to get with the same modem 16mbps dsl sync 30km away of Wellington and literally downtown Auckland I have only 5mbps..

Unfortunatly I cannot mess with the house wiring since it's an apartment and everything is inside the walls.
Maybe this is the reason for why I can't get the Orcon+ network and I have to use Telecom's wholesale.

Cheers

6299 posts

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+1 received by user: 288

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  Reply # 302386 26-Feb-2010 08:40
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Hi, well I would be asking for your line to be checked. I don't know exactly where the lines all run in Auckland, but a quick measure of the distance via several routes from say the corner of Fanshawe and Halsey and Auckland Central Exhange (Corner of Wellesley and Lorne) is under 2km, which should enable speeds twice what you get (if not more) assuming there is no fault.

Cheers
Cyril



311 posts

Ultimate Geek
+1 received by user: 3


  Reply # 302389 26-Feb-2010 08:44
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I'll do that, thanks. I'm actually very close to Fanshawe cnr Hasley.

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