Table A-7 Db9 Pin Assignment - Silicon Graphics Origin 3900 User Manual

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Table A-7 shows pinout assignments for the 9-pin male DB-9 connector.
Table A-7 DB9 Pin Assignment
Pin Assignment
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Description
Data carrier detect
Receive data
Transmit data
Data terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
Non-proprietary Connector Pinouts
245