Specifications

Table Of Contents
66 Chapter 9 Pinout reference
Digi One, PortServer TS, and Multi-Port Serial Cards RJ-45 to DB-25M console adapter
From
RJ-45
Signal Direction Signal To
DB-25
1 DCD DTR 20
2 RTS CTS 5
3 Ground Ground Shell
4 TxD RxD 3
5 RxD TxD 2
6 SG SG 7
7 CTS RTS 4
DSR 6 8 DTR
DCD 8
Pin 1 Pin 1
Female RJ-45 8-pin Male DB-25
Cable Adapter not to scale
* Arrows indicate which direction the signal is flowing
Notes:
All RJ45 cable adapters are 8-pin.
Altpin should be turned on when using this cable adapter so that DTR will drive DCD (standard usage).
If altpin is turned off, the hardware signal on RJ45 pin 1 becomes DSR instead of DCD. This alternative can be used if
DCD is not required, and DSR is needed instead.
This cable adapter utilizes the RTS signal of the serial device for hardware flow control (RTS/CTS).