Software modems
A Duston
hald at sound.net
Fri Aug 18 00:45:03 CDT 2000
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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