From: John H. Kim (kim_at_stormhaven.org)
Date: Tue Oct 27 1998 - 12:07:31 EST
On Tue, 27 Oct 1998, Sylvestre Meininger wrote:
>
> I just downloaded and installed IBM's 2.36 Modem (770ED) drivers, but
> connections are now stuck at a lousy 33.600.
>
> I'm used to my nice 115.000, what became of them ???
There are two connection speeds when dealing with modems.
The first is the modem's connection speed to the other modem,
which is currently limited by technology to 56 kbps. Often,
even a 56k modem will connect at a slower speed due to line
noise, singla loss, etc.
The second is the computer's connection speed to the modem,
which peaks at 115 kbps with current (standard) serial ports.
In general, you *want* this speed to be faster than the
modem's connect speed, since the modem may be doing hardware
data de/compression (so 56 kbps data goes into the modem, and
115 kbps data goes out to your computer).
By giving the modem an appropriate AT string, you can
customize the modem to report either speed when it connects.
Since it's physically impossible for a telephone modem to
connect at 115 kbps, my guess is that your modem used to
report its connect speed to your computer, and it now reports
its true connect speed.
-- John H. Kim kim_at_stormhaven.org
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