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Re: Acceptable DSL Speeds (ms based)


From: "Andy Johnson" <andyjohnson () ij net>
Date: Thu, 5 May 2005 00:52:23 -0400


----- Original Message ----- 
From: "Barney Wolff" <barney () databus com>

On Thu, May 05, 2005 at 10:59:04AM +0800, Ong Beng Hui wrote:

When I switched from 1600/384 to 3000/768 dsl, download speed went up
to
very nearly the promised 3Mbps, but latency to the first hop went from
14 ms to 26 ms.

Is there a reason for that ? that, latency goes up when bandwidth goes
up
for your case ?

I assume it had to do with different settings for interleaving on the
DSLAM, as some prior poster mentioned.

-- 
Barney Wolff         http://www.databus.com/bwresume.pdf
I never met a computer I didn't like.

Interleaved adds some error correction, allowing the connection to be more
resistant to interference (noisy lines), but at the expense of latency.
Fast-path is the other way data is sent, which obviously, is much faster,
I've personally seen less ~10ms for a loop around 11000ft.

--
Andy


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