Software modems

[Walter Dunz]

Hal, I LOVED the Station wagon full of CD's analogy!

I am surprised that someone hasn't written a linux driver for the software
modems.  The Linux OS would be a natural for this technology!  It would handle
it much better than 'doze.

I would not necesarily want one because I much prefer an external.  But that's
a product of too many lockups that kept the BBS down all night!  I was REALY
happy to see that the cable modem was extrenal and has lights.  

Brian Kelsay <bkelsay at askpioneer.com> wrote:
> I don't think that's how the manufacturers justify removing the chips from
> the modem and moving it to the faster PCI bus.  In fact, the software
modems
> I have used have been considerably slower than a hardware modem on ISA bus.
> Granted the CPU I had was probably just the minimum I could use but still
> the speed difference was ridiculous.  Also the system crashed about five
> times the day I finally yanked the card out.  Maybe someday Lucent or
> somebody will have good software to improve a PCI soft modem the way it
> should be done, but by then it will be irrelevant.
> 
> Brian
> 
> -----Original Message-----
> From: A Duston [mailto:hald at sound.net]
> Sent: Thursday, August 17, 2000 7:29 PM
> To: KCLUG
> Subject: kclug - Software modems
> 
> 
> Here is an article I found that might give a valid reason 
> for doing the modem in software.  
> "Bandwidth and Latency: It's the Latency, Stupid" by Stuart Cheshire
> Part 1 http://www.tidbits.com/tb-issues/TidBITS-367.html#lnk4
> Part 2 http://www.tidbits.com/tb-issues/TidBITS-368.html#lnk4
> 
> I'm not Ed, so I will summarize.  Basically what it says is that 
> since hardware modems are doing compression, they wait for 50 
> milliseconds of no data before flushing the buffer on down the 
> wire.  As most modems are used for ppp connections today, the PC 
> sends a packet, and then the modem waits 50 ms before it sends 
> it down the wire.  If the modem is in the software, the packet can 
> be sent immediately since the computer is in control of buffering. 
> 
> Hal Duston
> hald at sound.net
> If Al Gore invented the internet, why is it named after George W. Bush?
> 
> P.S. Jim, thanks for the comment at the meeting about my modem, 
> I checked and an interrupt conflict was the problem.
> 
> 
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> 

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