Denis St-Amand writes:
> Every 30 seconds, the DTR led turns off for around 5 seconds and
> then comes back.  The DTR is never dropped when connected, only when idle.
> The annoying thing is that it sometimes happen when we try to logon...

This sounds vaguely familiar.  We had a modem attached to a DTC48 doing the
same thing.

I believe the modem had DSR strapped high with CD normal.  The DTC was bothered
by DSR high without CD also high, so it was issuing the DTR toggle every 30
seconds to try and reset the modem.

Don't strap DSR high, or if you must keep DSR high, also keep CD high.
--
Mark Bixby                      E-mail: [log in to unmask]
Coast Community College Dist.   Web: http://www.cccd.edu/~markb/
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"You can tune a file system, but you can't tune a fish." - tunefs(1M)