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Article View: comp.sys.dec
Article #3813

RJ45 pin connections

#3813
From: Paul van Boxmeer
Date: Thu, 19 Nov 1992 15:19
52 lines
1928 bytes


Hi there,

can any one help me with the following problem:

I need to connect a DEC computer to a Multiplexer, using a serial line.

The DEC computer needs a RJ45, the Multiplexer a DB25-female connector. I
have no idea what cable to use, since I don't know th RJ45 connection. What
I would like is 1-1 connection from the RJ45 to the DB25 connector, the rest
(the part between the DB25 and multiplexer) I can figure out myself.

I have a RJ45 connector, a 6-wire cable and a DB25 connector, now all i
need to know which signals (FG-1, TD-2, RD-3, RTS-4, CTS-5,
DSR-6, SG-7, DCD-8, DTR-20) come out of the RJ45, and which is which?

Maybe somebody can complete the schema below.


Computer (RJ45 with catch top left)



          +----+
       +--|----|------------+
       |  |    |            |
       |  |    |            |
       |  |    |            |
       |  |    |            |
       |  +----+            |
       |                    |
       +--|--|--|--|--|--|--+
          |  |  |  |  |  +----------------->
          |  |  |  |  +-------------------->
          |  |  |  +----------------------->
          |  |  +-------------------------->
          |  +----------------------------->
          +-------------------------------->


Please e-mail to paul@integrity.nl,

thanks in advance,

Paul.
-- 
UUCP: ..!uunet!mcsun!sun4nl!integow!paul	or  paul@integrity.nl
Paul van Boxmeer, software engineer, Integrity software consultants, 
         Pelmolenlaan 2, 3447 GW Woerden, Netherlands,
            tel +31 3480-30131, fax +31 3480-30182
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Message-ID: <1635@integow.integrity.nl>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!integow!paul

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!integow!paul
From: paul@integow.integrity.nl (Paul van Boxmeer)
Newsgroups: comp.sys.dec,comp.dcom.modems
Subject: RJ45 pin connections
Message-ID: <1635@integow.integrity.nl>
Date: 19 Nov 92 15:19:22 GMT
Followup-To: poster
Organization: Integrity BV, Woerden, NL
Lines: 52