This answers some questions raised by some follow-ups to my previous
postings (public and private), see below for earlier posting.
Does the software upgrade to the USR 9105 make any difference? The version
is now 1556_011604-2.12L.01.a0_23a and it makes no appreciable difference.
What are the line-speeds reported by the modems?
Nokia M1122
Downstream Upstream
Attainable bit-rate 2752 576
Actual bitrate 2336 608
USR 9105
Downstream Upstream
Attainable rate (Kbps) 3808 928
Rate (Kbps) 3520 832
The difference between these figures and the observed ones below may be due
to the time it takes the packets to wend their way through Windows XP's new
fire-wall or, maybe, you can never get the rates the router claims. I
don't think the differences in this case are large enough to get excited
about.
What about time between retrains? The log over 15 hours on the USR 9105
showed one retrain following what I interpret as a short ADSL outage. So
I don't think retrains are an issue.
One correspondent pointed out my results don't necessarily imply that the
9105 is always better than the M1122 and that, of course, is a true statement.
Robert
-----Original Message-----
>Some time ago someone asked about the relative speed of the M1122 versus a
>more modern router for a difficult line. Here is one example. I am based
>some distance from the exchange and so can't expect full speed. I have just
>switched from a Nokia M1122 to a USR 9105 ($185 from Ascent Technology).
>
>The M1122's software is version Gx1x2230.G03 and hardware version is
>T66280.01 G.
>The 9105's firmware is version 1142_082603-2.12L.01.a0_23a.
>
>These are the download speed measurements for the new and old routers based
>on 4 blocks of 1 megabyte using the www.jetstreamgames.co.nz/speed site.
>
>USR 9105: 2.5 megabits / second
>
>Nokia M1122: 1.8 megabits / second
>
>Although there was quite a bit of variation between the 1 megabyte blocks I
>am pretty confident that the USR is faster (for downloads).
--
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Received on Mon Sep 20 02:36:19 2004