Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!van-bc!twg!bill
From: bill@twg.UUCP (Bill Irwin)
Newsgroups: comp.unix.questions
Subject: Re: Modem
Message-ID: <183@twg.UUCP>
Date: 16 Jun 90 08:10:01 GMT
References: <23608@adm.BRL.MIL> <3608@wb3ffv.ampr.org> <1990Jun15.224120.27813@virtech.uucp>
Reply-To: bill@.UUCP (Bill Irwin)
Organization: TWG The Westrheim Group, Vancouver BC
Lines: 20
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In article <1990Jun15.224120.27813@virtech.uucp> cpcahil@virtech.UUCP (Conor P. Cahill) writes:
>
>However, it requires that the port on which the user logs in to be set up in
>modem control mode (i.e. it requires DTR from the modem to enable the
>login).  The loss of DTR is the mechanism used by the system to determine
>when the line is lost.

I've  always thought that it was the computer that asserted DTR when  the
port  was  enabled and ready to spawn a getty, as soon as CD is  present.
If  DTR isn't true, the modem's auto answer is disabled until the port is
ready  (DTR  true).   Once the modem connects and asserts CD,  the  getty
comes  up.   If the line is lost, CD goes, and any orphaned processes  on
the port are killed if HUPCL is on.

Isn't this right or am I totally out to luch?
-- 
Bill Irwin - TWG The Westrheim Group - Vancouver, BC, Canada
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