RJ-45 Connector Pin-outs

RS-232 Signal Pin-outs of RJ-45

 

Pin 1 RTS
Pin 2 DTR
Pin 3 GND
Pin 4 TxD
Pin 5 RxD
Pin 6 DCD
Pin 7 DSR
Pin 8 CTS

 

 

RS-232 Signal Pin-outs of DB-9 Male

 

Pin 1 DCD
Pin 2 RxD
Pin 3 TxD
Pin 4 DTR
Pin 5 GND
Pin 6 DSR
Pin 7 RTS
Pin 8 CTS
Pin 9