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newshound
news at puzzle.UUCP
Mon Jan 8 19:29:59 AEST 1990
In article <25594 at cup.portal.com> thad at cup.portal.com (Thad P Floryan) writes:
>That assertion will NOT cause the system to think a modem connection has been
>"broken" even when you pull the modem's RJ-11 jack out of the wall; just
>think what this does if you're calling Ohio State long-distance; I suppose
>AT&T doesn't care since, for them, phone calls are free! :-) :-)
Take a look at how AT&T's recent modems handle DCD and you'll see the
thought behind it. A 22xx series will drop DCD momentarily when carrier is
lost, then turn it back on again. It makes using a non-AT&T modem difficult,
but it can be done.
By the way... Has anyone had this happen? Set stty hupcl, su to root,
exit, then exit or control-D again? Here it intermittently causes DTR not to
go off.
-- Bob
attctc!puzzle!bei
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