Digi Connect IT 4 User Manual page 14

Connect equipment to the Connect IT serial ports
The 4 RS232 serial ports are DTE and have the following pin configuration.
Pin
Pin 1 RTS
Pin 2
DCD
Pin 3
RXD
Pin 4/5
Pin 6
TXD
Pin 7
DTR
Pin 8
CTS
Note Ring indicate (RI) and data set ready (DSR) are not implemented.
The serial ports use a female RJ45 jack to enable connection using UTP Ethernet cabling.
Digi Connect IT® 4 User Guide
Description
Request to send
Data carrier detect
Receive data
Ground
Transmit data
Data terminal ready
Clear to send
Serial port pinout and use
Signal
Output from 4
Input to 4
Input to 4
Signal ground
Output from 4
Output from 4
Input to 4
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