What pins on RJ45 connector are recieve/transmit?

Hello all,

I have an RS232 connector as follows:

3 > TD
5 > RD
7 > RTS
9 > CTS
11 > DSR
12 > RCVRDY -
13 > SIG GND
14 > DTR
19 > RESET -

Now, I need to connect the RS232 pins 3 and 5 (transmit and receive respectively) to an RJ45 connector. I need pin 3 as Transmit and 5 as Receive from the RS232 to connect to the RJ45 so I can connect it to my sniffer to capture data.

What pins do these connect to on the RJ45 connector?

Reference question: http://www.experts-exchange.com/Hardware/Q_21199076.html, was ended prematurely.
LVL 3
jayrodAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

tonyteriCommented:
Check this link, it spells your RJ45 to RS232 issue out pretty clearly.

TT
0
CallandorCommented:
Pins 1,2,3, and 6 are used: http://yoda.uvi.edu/InfoTech/rj45.htm
0
CallandorCommented:
Here are the pin matchups from the original question:

RJ 45 Jack <->  DB9F

CTS 9  <-> 7 RTS
DTR 7 <-> 1 DCD
GND 6 <-> 5 GND
TX  5 <-> 2 RX
RX 4 <-> 3 TX
DCD 3 <-> 4 DTR
RTS 1 <-> 8 CTS
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

jayrodAuthor Commented:
tt, you left no link :)

Callandor,

The real problem I have, is that I have a single wire (not pair) on the RS232 for TX and a single wire for RX. On the RJ45, ALL references to it that you provided me show a TX + and TX - and RX + and RX -.

I can't map that TX on the RS232 to two wires (one pair) on the RJ45.

Does that clear up my problem?

Thanks for all the comments.
0
CallandorCommented:
Maybe this diagram is better: http://www.filibeto.org/sun/lib/hardware/netra_t1-105/netra_t1_serial_pinouts.html

RS232         RJ45
pin5 (CTS) -> pin1 (RTS)
pin6 (DSR) -> pin2 (DTR)
pin3 (RXD) -> pin3 (TXD)
pin2 (TXD) -> pin6 (RXD)
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
jayrodAuthor Commented:
Thanks Callandor, I think that is exactly what I needed.

Appreciate the help.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Hardware

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.