🚀 go-pugleaf

thanatoid <waiting@the.exit.invalid> wrote:
>CBFalconer <cbfalconer@yahoo.com> wrote:
>> thanatoid wrote:
>>> CBFalconer <cbfalconer@yahoo.com> wrote in
>>>
>> ... snip about modems ...
>>>>
>>>> Not so.  The bit rate can seriously exceed 56k.  You will
>>>> also find that such things as .zip files do not achieve
>>>> this.
>>>
>>> I realize whether the data transmitted is raw, zipped,
>>> rar'd, yEnc'd or mimed doesn't matter, but I do not
>>> believe bitrate can exceed 56KB (if that) - and most of
>>> the others in the thread seem to feel the same way.
>>
>> But it does matter, highly.
>
>No it does not.

CBFalconer is correct, it matters.

>If a modem can only receive 25kb per second due
>to whatever reasons, it does NOT matter whether that 25kb is raw
>text or a zipped file. It will do whatever compression it can,
>and give you whatever amount of data it can handle.

Not necessarily.

>> Your modem may not do
>> compression,
>
>Even my nearly 10 year old modem does compression.

Ten years ago is when modems ceased to be a significant factor
in computer networking for consumers.  That is the mere end of
their history.

Keep in mind that CBFalconer was a grizzled old fart even then,
never mind now!  ;-)

But, seriously, he is correct about modems that optionally do
not compress.

>As I said,
>all modem protocols except the very earliest ones - before they
>started using the term bps because at the time baud was more

The term bps was in use, even then.  M-ary encoding schemes have
existed since at least the 1930's.  Keep in mind that the PCM
encoding used in digital telephony was fully specified by the
mid-1940's.

The term "baud" was used with FSK modems because it is correct.
But the first modems introduced as consumer products where FSK
modems, and when consumer products moved to PSK using multiple
bits per symbol the consumer advertizing continued to use the
term "baud" because consumers were familiar with it.

It was not a technically correct usage, and it had not been used
in describing the many earlier professional modems that used the
same techniques.

>accurate and realistic - use compression. Mine only gives me the
>option to turn off IPX header compression. I don't even know
>what that means, it's NOT turned off, and everything works fine.

I suspect that your modem allows non-compressed data transfers
too.

>> or may be configured to avoid it.
>
>Huh?

Disabling compression is not commonly used, but is typically
available as a configuration option.

>> Zipped
>> files are already highly compressed, and cannot be much
>> further processed.
>
>I an aware of the fact you can drink water but not sand, thank
>you.

Are you aware that enabling compression increases latency?  If
your application is sensitive to latency and the data is not
compressable, the most reasonable modem configuation is to
disable compression.

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