RS-232 and other serial ports and interfaces
Pin Name Dir Description
1 DSR/RI <-- Data Set Ready / Ring Indicator
2 CD <-- Carrier Detect
3 DTR --> Data Terminal Ready
4 GND --- System Ground
5 RXD <-- Receive Data
6 TXD --> Transmit Data
7 CTS <-- Clear to Send
8 RTS --> Request to Send
8 pin RJ45 (8P8C) female connector layout
8 pin RJ45 (8P8C) female connector
at the devices
8 pin RJ45 (8P8C) male connector layout
8 pin RJ45 (8P8C) male connector
at the cables
According to 8 reports in our database (6 positive and 2 negative) this pinout should be correct.

Is this pinout
RS-232D visual pinout:
RS-232D diagram
click to enlarge
Source(s) of this and additional information: Hardware Book
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