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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!lzwi!psc
From: psc@lzwi.UUCP (Paul S. R. Chisholm)
Newsgroups: net.micro.att
Subject: Re: Help needed with Penril auto-answer/auto-dial modems on 3b2
Message-ID: <186@lzwi.UUCP>
Date: Wed, 3-Jul-85 13:13:34 EDT
Article-I.D.: lzwi.186
Posted: Wed Jul  3 13:13:34 1985
Date-Received: Thu, 4-Jul-85 05:32:37 EDT
References: <729@pyuxqq.UUCP>
Organization: AT&T-IS Enhanced Network Services
Lines: 26
Summary: use bidirectional, not incoming

< I can use my magic to change the color to red -- but I don't do windows. >

In article <729@pyuxqq.UUCP>, pat@pyuxqq.UUCP (Pat M. Iurilli) writes:
> Does anyone out there know why, or how to correct the following problem when
> using a Penril auto-dial/auto-answer modem with the Basic Networking
> software package on the 3b2?  After the modem hangs up, regardless if
> a successful connection was made or not, the modem oscillates on the
> phone line.  What I mean by this is that it picks up the line, gets a
> dial tone for an instant and hangs up.  It does this several times
> with a few second interval several times before stopping and freeing
> the line so it can again be used.
> Pat Iurilli  Bell Communications Research  Piscataway, NJ
> {allegra, ihnp4}!pyuxqq!pat

A port can be incoming, outgoing, or bidirectional.  For some reason
(possibly related to the fact that the Penril is a smart modem, and
keeps DCD up all the time, so open() succeeds even when no call is
incoming), specifiying incoming makes the getty constantly "pick up"
the phone.  If you specify bidirectional instead, uugetty is run on
the line.  Uugetty not only knows how to step out of the way of
outgoing calls, but is a little bit smarter about smart modems.
-- 
       -Paul S. R. Chisholm       The above opinions are my own,
       {pegasus,vax135}!lzwi!psc  not necessarily those of any
       {mtgzz,ihnp4}!lznv!psc     telecommunications company.
       "It must be fast, and it must be red, and it must have windows."