[ale] My modem is ignoring me

John M. Mills jmills at siberia.gtri.gatech.edu
Wed May 29 13:48:53 EDT 1996


jb- Whatever I typed after this point, not only did my modem not receive
jb- it, but the keystrokes didn't even echo on the screen. The
jb- Serial-HOWTO said nothing about this problem, and a week on and off of
jb- fiddling  with it produced no results. 

Did you try pointing Kermit at other serial ports?  Perhaps you're not
on the one you thought.  (If you linked through 'dev/modem', that's where
you should point Kermit.)

DB25/male would be right on my machine for /dev/cua1 (COM2: for the DOSish).
You may need a null-modem adapter -- I don't remember.

Can you just put a mating connector on the interface, type into kermit, and
see your keystrokes on the screen? (No fair setting 'local echo on' for this
test.)

Your serial port may expect CTS or some such handshake.  Disable any
such handshaking and try again if you can't see any locally looped-back
traffic.

Next, reconnect the modem and try typing 'at<cr>' -- if the modem hears
you, you should see the 'at' followed by a newline and 'OK'  -- If you
see that, you are basically 'on the air' and you need to look at your
Kermit scripts.

jb- Please, please tell me what I can do to get my modem to start talking
jb- to me again. I feel so lost, so...disconnected...without it. 

Serial communications have given me and others I know more burns per
successful application than almost any other aspect of computer hard-
and software.  This one should just be a matter of getting all the muzzles
pointed away from your remaining toes, however.

For my part, I would appreciate a couple of suggestions on making Seyon
work with comm protocols other than the builtin zmodem download.  Kermit
would be a good start.  I can't seem to get my .seyon/protocols defined
right.

TIA

Regards --jmm--

John M. Mills, Senior Research Engineer   --   john.m.mills at gtri.gatech.edu
   Georgia Tech Research Institute, Georgia Tech, Atlanta, GA 30332-0853
        Phone contacts: 770.528.3258 (voice), 770.528.7083 (FAX)
                  "It's the Bill of Rights, Stupid!"






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