Specifications

Table Of Contents
22 Chapter 5 EIA-232: RJ-45 to DB-25
RJ-45 8-pin plug hardware handshaking (RTS/CTS) cable
Using an 8-pin plug, the following cable wiring is often sufficient for a
terminal, printer, or other DTE device configured for RTS/CTS (hardware)
flow control. However, some terminals and printers may have other cable
requirements. Consult your terminal or printer manual for this information.
For more universal compatibility, use the RJ-45 10-wire terminal/printer
cable or a Digi RJ-45 to DB-25 adapter.
Terminal/printer cable with DTR handshaking
Note: Some terminal or printer manufacturers may use different methods of flow
control. Consult your documentation for specific wiring requirements.
RJ-45
(Digi end)
DB-25 male
(peripheral)
Signal Pin Pin Signal
DSR 1 connected to 20 DTR
RTS 2 connected to 5 CTS
GND 3 connected (via shield) to 1 (or shell) GND
TxD 4 connected to 3 RxD
RxD 5 connected to 2 TxD
SG 6 connected to 7 SG
CTS 7 connected to 4 RTS
DTR 8 connected to 8 DCD