Re: INFO-MICRO Digest V92 #66

Article View: comp.sys.misc

Article #515

#515

From: Barry_D._McGrath.ES_M7
Date: Tue, 06 Oct 1992 16:51

31 lines
1237 bytes

>I am trying to make a long null modem line.(30+ feet)  I know that there
>are only 5-6 connections required but I am not sure of the pins.  I am
>trying to use a 6wire phone line with no luck.  This is what I have tried :

>Computer 1         Computer 2
>   Pin                Pin
>    2 ---------------- 3
>    3 ---------------- 2
>  4&5 --------------  8
>    7 ---------------- 7
>    8  -------------- 4&5

>Is this correct? Do I need more connections?  Is it just my
>saudering(sp, I know) job?  Should I shield the cable? If so how?

>Please help,

>        John.

According to my diagram for a full handshake null modem, the connections are:

1----------1
2----------3
3----------2
4----------5
5----------4
6----------8 and 20
7----------7
8 and 20-----6

This works.

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Message-ID: <".6-Oct-92..9:51:22".*.Barry_D._McGrath.ES_M7@Xerox.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!think.com!spool.mu.edu!agate!ucbvax!XEROX.COM!Barry_D._McGrath.ES_M7

References: <92Oct5.224212pdt.11727@alpha.xerox.com>

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Path: arc1-ca.pugleaf.net!sparky!uunet!think.com!spool.mu.edu!agate!ucbvax!XEROX.COM!Barry_D._McGrath.ES_M7
From: Barry_D._McGrath.ES_M7@XEROX.COM
Newsgroups: comp.sys.misc
Subject: Re: INFO-MICRO Digest V92 #66
Message-ID: <".6-Oct-92..9:51:22".*.Barry_D._McGrath.ES_M7@Xerox.com>
Date: 6 Oct 92 16:51:27 GMT
References: <92Oct5.224212pdt.11727@alpha.xerox.com>
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 31

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