[slinkelist] Using DB-9 adapters and straight RJ-45
Saleh Igal
saleh@BRBA.com
Wed, 22 Dec 1999 23:31:38 -0600
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Altex has the DB-9 to RJ45 adapters for $1.99 each. Part number ma9f-8ts
and ma9m-8ts. You have to insert the individual pins into the D-sub shell,
so you can do whatever pinout you want.
I'm assuming (correct this post if I'm wrong) that the slink-e doesn't use
the ring indicator, so ignore pin 9 on both ends.
I've attached the cheat sheet I use when building these things. The color
code/pinout is just one I made up. If the line drawing characters show up
weird, save the file to DOS and "MORE< RS232.TXT" from a prompt.
______________________________________________________________________
Saleh W. Igal saleh.igal@brightstar.com
VP/GM - Application Hosting & Support http://www.brightstar.com
BrightStar Information Technology Group Mobile: (214)415-2088
2515 McKinney Avenue, Dallas, TX 75201 VoiceMail: (214)922-9030
______________________________________________________________________
-----Original Message-----
From: Denny Brennan [mailto:cbrennan@mediaone.net]
Sent: Monday, December 20, 1999 7:07 am
To: slinkelist@nirvis.com
Subject: [slinkelist] Using DB-9 adapters and straight RJ-45
While I have read the instructions regarding using the above to connect the
Slink-E to my computer (I need to run about twenty-five feet and would like
to do it through wall plates), there's not enough information for me to be
sure exactly how to do it.
What is the specific wiring requirements? One DB-9/RJ-45 male adapter, one
DB-9/RJ45 female adapter and 25 feet of networking cable? Or something else?
Also where can I order these things? Any recommendations would be greatly
appreciated.
db
_______________________________________________
slinkelist maillist - slinkelist@nirvis.com
http://www.nirvis.com/mailman/listinfo/slinkelist
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RS-232 pinouts
25 pin 9 pin Data Abbrev Name Purpose
=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D =3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
7 5 n/a SG Signal ground Common ground
2 3 out TD Transmitted data Computer to modem
3 2 in RD Received data Modem to computer
4 7 out RTS Request to send Computer wants to =
send data
5 8 in CTS Clear to send Modem gives OK to =
send data
20 4 out DTR Data term. ready PC is online
6 6 in DSR Data set ready Modem is turned on
8 1 in CD Carrier detect Modems are =
communicating
22 9 in RI Ring indicator Telephone is =
ringing
=0CNull modems
"Standard" null modem
Computer A Computer B Description
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
SG =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4SG Ground
TD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RD Data from A to B
RD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4TD Data from B to A
RTS=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4CTS Flow control from A =
to B
CTS=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RTS Flow control from B =
to A
DTR=C4=C4=C4=C4=C4=C4=C4=C4=C4=C2=C4=C4DSR "Powered on" from A =
to B
=C0=C4=C4CD
DSR=C4=C4=C2=C4=C4=C4=C4=C4=C4=C4=C4=C4DTR "Powered on" from B =
to A
CD =C4=C4=D9
Alternative - don't test for power
Computer A Computer B Description
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
SG =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4SG Ground
TD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RD Data from A to B
RD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4TD Data from B to A
RTS=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4CTS Flow control from A =
to B
CTS=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RTS Flow control from B =
to A
DTR=C4=C4=BF =DA=C4=C4DTR Fool each computer into =
thinking the other is on
DSR=C4=C4=B4 =C3=C4=C4DSR
CD =C4=C4=D9 =C0=C4=C4CD
Alternative - one way flow control
Computer Printer Description
=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
SG =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4SG Ground
TD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RD Data from computer to =
printer
CTS=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RTS Flow control from =
printer to computer
DTR=C4=C4=BF =DA=C4=C4DTR Force computer into thinking =
printer is powered on
DSR=C4=C4=B4 =C3=C4=C4DSR and force printer into thinking =
computer is on and
CD =C4=C4=D9 =C3=C4=C4CD ready.
=C0=C4=C4CTS
Alternative - software flow control
Computer A Computer B Description
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
SG =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4SG Ground
TD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4RD Data from A to B
RD =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4TD Data from B to A
DTR=C4=C4=BF =DA=C4=C4DTR Fool each computer into =
thinking the other is on
DSR=C4=C4=B4 =C3=C4=C4DSR and ready.
CD =C4=C4=B4 =C3=C4=C4CD
CTS=C4=C4=D9 =C0=C4=C4CTS
=0CModular adapter pinouts
RJ45 to 9 pin null modem
RJ45 pin/Color DB9 pin
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D
1=C4=C4=C4blue=C4=C4=C4=C4=C4=C4=C4=C4=C4=C45
2=C4=C4=C4orange=C4=C4=C4=C4=C4=C4=C4=C42
3=C4=C4=C4black=C4=C4=C4=C4=C4=C4=C4=C4=C43
4=C4=C4=C4red=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C47
5=C4=C4=C4green=C4=C4=C4=C4=C4=C4=C2=C4=C41
=C0=C4=C46
6=C4=C4=C4yellow=C4=C4=C4=C4=C4=C4=C4=C48
7=C4=C4=C4brown=C4=C4=C2=C4=C4=C4=C4=C4=C44
8=C4=C4=C4white=C4=C4=D9
RJ45 to 9 pin straight through
RJ45 pin/Color DB9 pin
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D
1=C4=C4=C4blue=C4=C4=C4=C4=C4=C4=C4=C4=C4=C45
2=C4=C4=C4orange=C4=C4=C4=C4=C4=C4=C4=C43
3=C4=C4=C4black=C4=C4=C4=C4=C4=C4=C4=C4=C42
4=C4=C4=C4red=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C48
5=C4=C4=C4green=C4=C4=C4=C4=C4=C4=C4=C4=C44
6=C4=C4=C4yellow=C4=C4=C4=C4=C4=C4=C4=C47
7=C4=C4=C4brown=C4=C4=C4=C4=C4=C4=C4=C4=C46
8=C4=C4=C4white=C4=C4=C4=C4=C4=C4=C4=C4=C41
RJ45 to 25 pin null modem
RJ45 pin/Color DB9 pin
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D
1=C4=C4=C4blue=C4=C4=C4=C4=C4=C4=C4=C4=C4=C47
2=C4=C4=C4orange=C4=C4=C4=C4=C4=C4=C4=C43
3=C4=C4=C4black=C4=C4=C4=C4=C4=C4=C4=C4=C42
4=C4=C4=C4red=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C44
5=C4=C4=C4green=C4=C4=C4=C4=C4=C4=C2=C4=C46
=C0=C4=C48
6=C4=C4=C4yellow=C4=C4=C4=C4=C4=C4=C4=C45
7=C4=C4=C4brown=C4=C4=C2=C4=C4=C4=C4=C4=C420
8=C4=C4=C4white=C4=C4=D9
RJ45 to 25 pin straight through
RJ45 pin/Color DB25 pin
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D
1=C4=C4=C4blue=C4=C4=C4=C4=C4=C4=C4=C4=C4=C47
2=C4=C4=C4orange=C4=C4=C4=C4=C4=C4=C4=C42
3=C4=C4=C4black=C4=C4=C4=C4=C4=C4=C4=C4=C43
4=C4=C4=C4red=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C45
5=C4=C4=C4green=C4=C4=C4=C4=C4=C4=C4=C4=C420
6=C4=C4=C4yellow=C4=C4=C4=C4=C4=C4=C4=C44
7=C4=C4=C4brown=C4=C4=C4=C4=C4=C4=C4=C4=C46
8=C4=C4=C4white=C4=C4=C4=C4=C4=C4=C4=C4=C48
=0C10-base-T cables
RJ45 pin Standard color code Comments
=3D=3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D
1 white/orange =20
2 orange =20
3 white/green =20
4 blue Not used by 10-base-T
5 white/blue Not used by 10-base-T
6 green =20
7 white/brown Not used by 10-base-T
8 brown Not used by 10-base-T
Making a "flip" cable to connect two computers or two hubs back-to-back
Computer A Computer B
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
1=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C43
2=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C46
3=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C41
6=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C42
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