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From: cbp@foster.avid.OZ (Cameron Paine)
Newsgroups: comp.sys.hp
Subject: modem(7) problems on 9000/350 under 6.5
Keywords: getty(1); modem(7); tty I/O failure
Message-ID: <291@foster.avid.OZ>
Date: 4 Sep 89 22:31:00 GMT
Organization: Avid Systems Pty Ltd, Australia
Lines: 32

We've recently upgraded to HP-UX 6.5. Prior to the upgrade, we were
running three CCITT compliant V.22 modems attached to the modem ports
of the four-channel MUXes (we have 8 MUXes in all). We were using the
modem(7) interface for ACU control, dial-out and dial-in access to
the ports. The device files were configured in SIMPLE mode (because
CCITT mode appeared not to work). This configuration had been working
fine since I set it up under 5.5.

Under 6.5, this arrangement will only work *once* for each port when
the system is rebooted. After that, getty sleeps forever (in an
interruptable state (TTIPRI?)) and refuses to enter a dialogue with
an incoming call. Does this sound familiar to anyone? (If so, read on)

I've tried a variety of experiments and am able to describe the symptoms
of the problem in considerable detail. I'll not post these here but I
am willing to email them to anyone who thinks they have an answer but
needs more detail.

There were some difficulties with the upgrade process and HP seem to be
concentrating their efforts to locating the flaw in the way we completed
the upgrade. I acknowledge that the problem could be due to a cockup on
our part. However I'd like to get some parallel thinking happening. This
has really crippled our operation.

Can anyone help me out? Please respond via email - this is not likely to
be of general interest. And *please*, no speculation or confirmation that
this works on your system. I know it does; that's what's driving me nuts!
-- 

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