### Digi DB-25 Connector Pin Assignments

Signal | Description | DTE Use | Pin #
GND | Chassis Ground | N/A | Shell
TxD | Transmitted Data | Output | 2
RxD | Received Data | Input | 3
RTS | Request to Send | Output | 4
CTS | Clear to Send | Input | 5
DSR | Data Set Ready | Input | 6
SG | Signal Ground | reference | 7
DCD | Data Carrier Detect | Input | 8
DTR | Data Terminal Ready | Output | 20
RI | Ring Indicator | Input | 22

Copyright © 1999, Digi International. All rights reserved.