Below are the pinouts for RJ12/MMJ to DB25 and RJ12/MMJ to DB9 for terminals and modems. Please note the use of a ROLLED serial cable between the ETS/EPS to the adapter.

ETS/EPS Serial Pinouts Terminal or Printer ETS/EPS Cable Adapter RJ12 (Rolled) RJ12 DB-25 Signal DSR 6 6--------------1 1---------------20 DTR RX+ 5 5--------------2 2---------------2 TXD RX- 4 4--------------3 3-----| 7 Signal Ground TX- 3 3--------------4 4-----|---------7 Signal Ground TX+ 2 2--------------5 5---------------3 RXD DTR 1 1--------------6 6---------------6 DSR Cable Adapter RJ12/MMJ (Rolled) RJ12 DB-9 Signal DSR 6 6--------------1 1---------------4 DTR RX+ 5 5--------------2 2---------------3 TXD RX- 4 4--------------3 3-----| 5 Signal Ground TX- 3 3--------------4 4-----|---------5 Signal Ground TX+ 2 2--------------5 5---------------2 RXD DTR 1 1--------------6 6---------------6 DSR Modem=====ETS/EPS Cable Adapter RJ12 (Rolled) RJ12 DB-25 Signal DSR 6 6--------------1 1---------------6 DSR RX+ 5 5--------------2 2---------------3 RXD RX- 4 4--------------3 3------| 7 Signal Ground TX- 3 3--------------4 4------|--------7 Signal Ground TX+ 2 2--------------5 5---------------2 TXD DTR 1 1--------------6 6---------------20 DTR Cable Adapter RJ12/MMJ (Rolled) RJ12 DB-9 Signal DSR 6 6--------------1 1---------------6 DSR RX+ 5 5--------------2 2---------------2 RXD RX- 4 4--------------3 3-----| 5 Signal Ground TX- 3 3--------------4 4-----|---------5 Signal Ground TX+ 2 2--------------5 5---------------3 TXD DTR 1 1--------------6 6---------------4 DTR When looking at the RJ12/MMJ socket with the notch for the locking tab facing down the pins are numbered 1-6 left to right 123456 [||||||] [ ] [__ _] |__|

[Originally Published On: 08/19/1999 11:22 AM]