Re: NOTICE: /dev/cuaa%d -> /dev/cuad%d renaming

From: Randy Bush <randy_at_psg.com>
Date: Wed, 13 Oct 2004 19:29:08 -0700
>> i am chasing this.  but i am getting confusing information about
>> which pin is dcd.  on your bog-standard pee cee db9m, which pin
>> is dcd?
> Pin 1.

then phk's initial question was spot on.  i need to figure out how
to wire up pin 1.  it's coming from a cisco 2511 over an rj45 to
wirable shells which i currently wire as

    PC DB9F connector for 2511 RJ45:
    2       yellow
    3       black
    4       orange
    5       red
    6       brown
    7       blue
    8       white

pins 1 and 9 and the green wire currently unwired.  now i have to
trace the 2511's forward.  cisco docs say

    DTE Async serial ports, via RJ-45 plug on the octopus cable,
    1  CTS      to 2511
    2  DSR/DCD  to 2511
    3  Rxd      to 2511
    4  Rxd/Gnd  ---
    5  Txd/Gnd  ---
    6  Txd      from 2511
    7  DTR      from 2511
    8  RTS      from 2511

mobo docs say   shell color
    1 CD	   nc	
    2 RD	   yellow
    3 TD	   black
    4 DTR	   orange
    5 GND	   red
    6 DSR	   brown
    7 RTS	   blue
    8 CTS	   white
    9 RI	   nc

the piece of paper in the wirable rj to db shell sez

    1 blue
    2 orange
    3 black
    4 red
    5 green
    6 yellow
    7 brown
    8 white

so, as best i can read it, this says

     cisco           cable wires   pc db9f/m
     2511	       color         mobo
     ----------	       ------	    ------
     1 cts in          blue	     7 rts
     2 dsr/dcd in      orange	     4 dtr
     3 rxd in	       black	     3 txd
     4 rxd gnd	       red	     5 gnd
     5 txd gnd	       green	     nc
     6 txd out	       yellow	     2 rxd
     7 dtr out	       brown	     6 dsr
     8 rts out	       white	     8 cts
                                     1 dcd

so, essentially, as there is no modem, and the cisco 2511 does not
provide a dcd-out, i get to install a 12vdc battery :-)

randy
Received on Thu Oct 14 2004 - 00:29:13 UTC

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