[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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