🚀 go-pugleaf

A colleague here at NIH is having problems using their Sun 2 and their Hayes
modem.  Inquiries are being made of Sun; I'm also posting this item so that
if one of you knows something that Sun doesn't. . .

The Sun is running 4.2bsd (release 1.1).  The colleague wants to use the
port connected to the Hayes both for dialing in and dialing out.  However,
there doesn't seem to be a single cable that can be put between the Sun's
DB-25 connector and the Hayes's DB-25 connector that will allow for both
dialing in and dialing out:

      *	if you install a cable that *does* connect the Hayes modem's pin 8
	(data carrier detect) to the Sun's pin 8 then dialing in works but
	you get a "can't synchronize with Hayes modem" message when you use
	a command like
		tip 5551212

      *	if you install a cable that *does not* connect the Hayes modem's pin 8
	(data carrier detect) to the Sun's pin 8 then you can get commands like
		tip 5551212
	to work but when you dial in the modem hangs up the phone almost
	immediately after answering it.

(In all the above work, the "/etc/ttys" file was edited appropriately and a
"kill -HUP 1" command was executed by the root user before attempts were made
to dial in or dial out.)

Have you experienced such problems?  Do you know how to overcome them?  If you
do, I'd appreciate hearing from you.
--
Sun is a Sun Microsystems trademark.
Hayes is a Hayes (insert corporate lingo here) trademark.
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