🚀 go-pugleaf

thanatoid <waiting@the.exit.invalid> wrote:
>CBFalconer <cbfalconer@yahoo.com> wrote in
>news:462E51B4.C1DDE988@yahoo.com:
>> Besides which 56k modems usually have compression
>> techniques added, so they can process communications at
>> well over 56k.
>>
>
>AFAIK, ALL modems except the earliest models ever (300 baud
>etc.) use compression to achieve their "rated speeds", and no 56
>modem can process anything at a faster speed than 53 or 56 (I
>don't know which is correct - see thread - and they're
>practically the same anyway).

>And it achieves that speed by compression. AFAIK, it's just a
>14.4 or 28.8 (my knowledge fails me here) modem with much better
>compression algorithms and some newer components.

There are some rather dramatic differences between 14.4/28.8
(v.32 or v.34) modems and a v.90 or v.92 modem.

The actual bit rate over the modem link does in fact approach
53Kbps (though it is an extremely rare circumstance that it
actually gets that high, and more typical links would run at 42
to 49 Kbps).

The actual throughput depends on how much the data can be
compressed, and might actually peak at 4 times the link rate,
though that again is very rare.  More common rates would be just
less than 2x compression on regular text files, and no
compression at all on many binary files.

-- 
Floyd L. Davidson            <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska)                         floyd@apaflo.com