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#27381 23-Oct-2008 20:23
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I been having a look at some of the online calculators which estimate what actual ADSL/ADSL2+ line connection speeds you should get, the odd thing is there is a reasonable difference between what is estimated and what actually is achieved,
i'm 3.5kms from Frankton Exchange in Hamilton, getting 45.4db of Line attenuation and 12.1db Noise Margin, connected at 5.2mb using ADSL2+ (Dynalink RTA1025W Router).
I know wireing makes a difference, the router is plugged into a jack that Sky installed yet when I once had it on the main jack I was getting around 6mb.

The calculators i found using google all rekon I should be getting around 7mb based on that much line attenuation so would it be possible that Telecom limits how fast the router connects to the exchange?

Cheers.

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  #173177 23-Oct-2008 20:31
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Line attenuation is just one of the conciderations, that said its a main concideration, however at 3.5km to expect anything over 5Mb/s is probably as good as it gets. Many of the calculators dont take account of disturbers to the line (ie the number of other DSL services in the same wrapper) which are the biggest factor if you have joints and stubs under control.

Cyril

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  #173221 23-Oct-2008 23:28
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I've just worked my way through an ADSL2+ upgrade.  The Internode graph says I should be getting about 11,000 bps, but I'm only getting 9.000.  It started off at 7,000 - I gained 1,000 bps from a router upgrade, then another 1,000 from tidying up the wiring in the termination box.  I've got a few other thing to try, so might get there yet.




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