I have an Option 81 that I do work on. I have a remote support tech if things get too deep.
There is NO monitor in the room - only an SEB that the remote tech dials into if he needs to.
There is a line cord with RJ45 that plugs into an adapter that changes the RJ45 to DB9.
If I need access to the system, I have to unscrew the DB9 (which is a big pain) and then take that cable and
connect to my laptop to access the system.
I want to have my own DB9 to RJ45 adapter so that all I have to do is unplug the line cord and plug it into my
adaptor. Problem is, I do not know exactly what the pin-outs are.
I asked the remote tech - he gave me a link to a web page, but I don't think that is the correct pin-out.
I look on the internet and I get all kinds of different configurations for DB9 to RJ45
I was out to this site today.
I did not have a lot of time but took the time to take the adapter apart and as best as I could
I wrote down the wiring.
Because I was in a hurry - I forgot to find one thing - the order of the pins on the DB9.
Was I looking from the front or the back of the DB9 plug.
So it could be 1,2,3,4,5 or backwards (5),(4),(3),(2),(1).
But this is what I saw and you can switch the pin numbers accordingly.
RJ45 - - - DB9
1 Blue - - 6 - (9)
2 Org - - 9 - (6)
3 Black- - 3 - (3)
4 Red - - nowhere
5 Green - 5 - (1)
6 Yellow - 1 - (5)
7 Brown - 4 - (2)
8 White - -2 - (4)
- - - - - - Looped on DB9 8 to 7 - (7) to (8)
Does this really look right?
It works.
And I know the saying, "If it works then use it"
Does anyone have a "For Sure" configuration for this adapter?
Just in case I missed something and did not mark it right.
I am looking for feedback before I put these pins together and
cut up wires to do the loop.
Once I push the wire into the DB9 it will not come out very easily.
Thanks