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000339_JDanSkinner@JDanSkinner.com_Thu Oct 23 12:48:20 2003.msg
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Path: newsmaster.cc.columbia.edu!panix!news.maxwell.syr.edu!postnews1.google.com!not-for-mail
From: JDanSkinner@JDanSkinner.com (Dan Skinner)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: DSR off ...
Date: 22 Oct 2003 15:20:43 -0700
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References: <cf6cc183.0310211334.2b68926b@posting.google.com> <slrnbpbcob.co2.fdc@sesame.cc.columbia.edu> <8ce22d01.0310211755.5aeb83f8@posting.google.com> <slrnbpdjid.2bd.fdc@sesame.cc.columbia.edu>
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Xref: newsmaster.cc.columbia.edu comp.protocols.kermit.misc:14592
Frank da Cruz <fdc@columbia.edu> wrote in message news:<slrnbpdjid.2bd.fdc@sesame.cc.columbia.edu>...
> In article <8ce22d01.0310211755.5aeb83f8@posting.google.com>,
> Dan Skinner wrote:
> : Tried and true null modem cable 25 pin D connectors
> : 1 ----- 1
> : 2 ----- 3 2 twisted pair cable 1 and 7 separate pairs
> : 3 ----- 2
> : 7 ----- 7
> :
> : 4 -| |- 4 4 & 5 jumpered in each head
> : 5 -| |- 5
> :
> : 6 -| |- 6 6 - 8 & 20 jumpered in each head
> : 8 -| |- 8
> : 20-| |-20
> :
> : Use xon xoff protocol.
> :
> That's one kind of null modem cable, called the "fakeout", in which each
> computer is reading back its own modem signals. When you actually want to
> detect whether the other computer is really there, and also be able to use
> hardware flow control, run A's DTR to B's CD and DSR (and v.v.), A's RTS to
> B's CTS (and v.v.)
>
> - Frank
Agreed, and the more sophisticated lashings are important to more
robust connections, but when I start fussing with control line values
and all I want
is to trade data between a couple of machines I've always got a
"fakeout" cable
and a couple of gender changers and 25 to 9 pin converters in my bag.
If that doesn't work, it probably won't work <period>. Well there is
probably a breakout box buryied in the bottom of that bag someplace.
Regards...Dan.