cagle@ocelot.cs.wisc.edu (Jay Cagle) (09/22/90)
I want to buy a Hayes-compatible 2400-baud external modem, and I'm not sure
which "extra" features are important to have, if any. By extra features, I
mean error correction and text compression (e.g., v.42/v.42bis, MNP n).
I will be using this modem mainly for dialing in to the campus systems and
transferring files to/from my Mac. I'm not sure whether the campus modems
support any sort of correction/compression protocols (something I need to find
out), but also it can't hurt to plan for the future.
For interactive use, are the correction/compression mechanisms enabled?
Obviously, if I'm typing slow, they don't buy me anything, but will they slow
down the transfer rate from the overhead? Do they kick in automatically
when a file (or large burst of info) is being transferred?
Do these protocols automatically determine what the modem at the other
end is using, or do they have to be enabled via some command?
So, are "extra" features needed, or should I just stick to a vanilla modem?
If they're recommended, what protocols should I look for?
Also, can anyone recommend quality modem manufacturers. I don't want to
pay an arm and a leg. I was looking specifically at a SupraModem 2400 plus.
Any thoughts?
Private email would be best, but I'll probably follow this group for a while.
Thanks!
Jay
cagle@cs.wisc.edu