jlg@ddsw1.UUCP (JL Gomez) (09/04/88)
I have a question concering the wiring scheme for DTE to DTE connection. I am using a RJ-11 - DB25 adaptor. The problem is that there are only 4 wires available to connect. I do know I need pins 2 & 3 crossed and pin 7 is a straight thru. Now, what do I do with the extra wire and would I have to short any pins on the serial port end of the unix-pc? Thanks for the info. -- JL Gomez
thad@cup.portal.com (09/06/88)
> I have a question concering the wiring scheme for DTE to DTE connection. > I am using a RJ-11 - DB25 adaptor. The problem is that there are only > 4 wires available to connect. I do know I need pins 2 & 3 crossed and > pin 7 is a straight thru. Now, what do I do with the extra wire and > would I have to short any pins on the serial port end of the unix-pc? > Thanks for the info. Here's what I've been using reliably: OTHER DTE UNIX PC (1)----------------------------(1) (2)----------------------------(3) (3)----------------------------(2) (7)----------------------------(7) +---(4) | +---(5) +---(6) | +---(8) | +---(20) Thad Floryan [ thad@cup.portal.com (OR) ...!sun!portal!cup.portal.com!thad ]
pjh@mccc.UUCP (Pete Holsberg) (09/06/88)
In article <1639@ddsw1.UUCP> jlg@ddsw1.UUCP (JL Gomez) writes:
...I have a question concering the wiring scheme for DTE to DTE connection.
...I am using a RJ-11 - DB25 adaptor. The problem is that there are only
...4 wires available to connect. I do know I need pins 2 & 3 crossed and
...pin 7 is a straight thru. Now, what do I do with the extra wire and
...would I have to short any pins on the serial port end of the unix-pc?
...Thanks for the info.
...--
...JL Gomez
Some questions...What is the other DTE? Does it have but 4 wires? What
is the "extra" one?
The UNIX PC crosses 2 and 3, and connects 7 straight through as you have
said. It expects 4 and 5 shorted, and 6, 8, and 20 shorted. Note that
no control is passed across the interface with this connection.
Pete Holsberg UUCP: {...!rutgers!}princeton!mccc!pjh
Technology Division ...!att!jonlab!mccc!pjh
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