[TriLUG] Re: A Slow Serial Modem
Neil L. Little
nllittle at vnet.net
Sun Jan 22 19:16:28 EST 2006
One thing, instead of autobaud, set the speed manually to 1200 using the
modem AT commands.
I remember that the modems used on a Nortel DMS switch were funny like that.
Also manually turn off the V.92 protocol. (that is an autosetting when
A lot of these older systems required a break character as an attention
signal to get a prompt.
Not all of these "new fangled" modems will pass a break.
I don't know if thats a requirment for your "old" system but it bears
In other words you're gonna have to manually "dumb down" your modem
Neil Little, WA4AZL JARS Forever!
I need one!!! (me thinks)
I'm working on a project that requires a modem connection between a
modern (currently running ubuntu 5.10) linux box and an old proprietary
industrial computer which uses a 1200 baud modem.
To do this project, we purchased a Creative Labs-Modem Blaster 56K V.92
External Modem-DE5621 from Best Buy.
For whatever reason, we can't seem to get it to connect to the old
system at a slow enough speed.
So ... my question is twofold.
1. does anyone have any experience in this area? ie. connecting
modern day stuff with 20+ year old equipment? and/or any experience with
2. does anyone have access to OLD modems that would be more
"comfortable" for lack of a better word with slower systems?
Thanks in advance,
-- Brian Bell
bbell at kneecap.net
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