Specifications

Table Of Contents
Chapter 4 EIA-232: DB-25 to DB-25 13
DB-25 hardware handshaking (RTS/CTS) cable
A DB-25 hardware handshaking (RTS/CTS) cable 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 a fully-wired DB-25 terminal/printer
cable.
Terminal/printer cable with RTS/CTS handshaking
Note: Some terminal or printer manufacturers may use different methods of flow
control. Consult your documentation for specific wiring requirements.
DB-25 female
(Digi end)
DB-25 male
(peripheral)
Signal Pin Pin Signal
TxD 2 connected to 3 RxD
RxD 3 connected to 2 TxD
RTS 4 connected to 5 CTS
CTS 5 connected to 4 RTS
DSR+DCD 6+8 connected to 20 DTR
SG 7 connected to 7 SG
DTR 20 connected to 6+8 DSR+DCD
GND Shell connected (via shield) to Shell GND