Perle Systems Speed LE 1P - Manual (Page 45)

Connector Box and Cable Pinouts
Page 45
RJ45 10-pin to DB25 Converter
RJ45 pin DB25 Pin EIA-232 DIRECTION
1 22 RI IN
2 8 DCD IN
3 20 DTR OUT
4 6 DSR IN
5 7 GND
6 2 TXD OUT
7 3 RxD IN
8 4 RTS OUT
9 5 CTS IN
10 N/C
1 & Shell 1 & Shell C-GND