SUMMARY: all ports busy on installed modem

From: Gary Richardson (
Date: Thu Jan 07 1993 - 00:37:30 CST

First off, I want to officially say:


Secondly, I want to send out my sincere thanks to everyone who sent
me responses with their helpful words. I DID succeed in getting my
modem to both dialin AND dialout. I got many suggestions, the ones
I applied that eventually led to the success were:

- set on the modem "at&c1" to tell the modem not to have CD on all the

- have the eeprom settings of:


                (then power cycling the sparcstation)

- set up ttysoftcar -a to be "ttysoftcar -n ttyd0"

Then one thing I noticed on my own... I tried another cable that
had a different pinout (if it means anything... modtap blue-gray connectors
instead of white-gray). The comination off all of that did the trick!
I have a feeling that the cable might've been the main culprit. Since,
when I didn't have the getty running, it didn't care if CD was high
or not, I could tip no problem. But with getty running, it saw the CD
high (which I bet the cable was producing) and prompted for the login.
Thus, the "all ports busy" error since the getty was trying to let
the "cd" login! But I'm sure the other things I did contributed to
my success, although I'm sure the cable was the biggest problem I

Another thing I happened to do is that since I have the getty as D9600
I set the serial port on the modem to be at 9600 all the time, regardless
of what the incoming modem baud rate is (I did this by tip'ing into
the modem @9600bps, then entering the following command after I had
done atdt (phone number) to another 9600 baud modem):


                The &b1 tells the modem's serial port to be a fixed
                rate, or the last baud rate that was entered to it
                via the "at" command, which was my dialin to another
                9600 baud modem.

There are many people I want to thank, but in particular I want to
thank the following for the emails that gave me my solutions (others
had the same solutions, but these people were first! :-):

And to the others who were gracious enough to respond to me, THanks!:
etnibsd!vsh@uunet.UU.NET (Steve Harris) (Jim Murff)
kall@mayo.EDU (Bruce Kall)
lemke@MITL.COM (Kennedy Lemke)
Patrick O'Callaghan <> (David Beckemeyer) (Guntram Wolski)
Mike Raffety <>
tgsmith@spdev.East.Sun.COM (Timothy G. Smith - Special Projects)
freyr! (Phillip Akers) (Peter Gross)
trdlnk!mike@uunet.UU.NET (Michael Sullivan)
overdijk@ECN.NL (Harrie Overdijk) (Amir J Katz) (Buddy Mecca) (Peter Gutmann)
zohreh@Teradyne.COM (Zohreh Shahbazi) (Liesl Prather) (Scott Babb)


    ____ ___ ____ ____ ____ ____
   / / / / / / / / / / /| / WHO: Gary Richardson
  /___/ /__/ / / / /--- / / / | / HOW:
 / / | /___/ / /____ /___/ / |/ INC. WHAT: Unix Systems Admin
_________________________________________ WHY: Why not??
9 Technology Drive, Westborough, Ma 01581

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