I don't know about "standards" for DB-9 to RJ-45 connectors. I've got a number of devices that use them, and at least four different wiring patterns. So, I've got to keep four different cables in the kits, with lots of labels as to which goes to what.
Kind of like null modem adapters and cables. There are several ways to wire them as well. Some work fine for some applications, others don't work at all. As always, YMMV, Michael larry told me on 10/27/2005 23:28: > I thought someone listed a recommended pinout for the rj45/db adapters > to use between a pc and the kxtd and tvs several years ago on this > list. there was even someone selling kits. I just spent 2 hours > searching the archives and couldn't find it. > > Anyone remember it and can post it? even Michaels /before page > doesn't show it anymore. i tasked a tech to build a bunch of these and > would like to stick to any informal standard. i was looking at the > cisco and adtran admin connectors, but they only need four pins. i > don't need the db9 to db25 pin out, have that down solid ;-) > > i'm tending toward just using 2 to 2 thru 8 to 8 and then use 1 for 20 > on the rj45 plug. > > could dig up the old dec plug pinout, it was unique in that pin 3 and 4 > (of 6) was "ground". the short made sure accidentally plugging into > phone jack couldn't put 48 vdc on the rs232 terminal pns. pin 2 and 5 > were rx /tx, 1 and 6 were dsr/dtr, cable was crimped 1 to 1. but > crimping 1 to 6 (flip one end of cable over, like regular line cord) > made a crossover cable to test two terminals back/to/back. might be a > good idea, put cts/rts on pin 1 and 8 of an 8 pin rj45, hey i like it. > > thanks for the help! > > -larry / dallas > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
