RS-232 and other serial ports and interfaces  > Cisco pinouts
The auxiliary port is configured as data terminal equipment (DTE)
Pin Name Description Dir
1 RTS Request To Send OUT
2 DTR Data Terminal Ready OUT
3 TXD Transmit Data OUT
4 GND Ground -
5 GND Ground -
6 RXD Receive Data IN
7 DSR Data Set Ready IN
8 CTS Clear To Send IN

 

8 pin RJ45 (8P8C) female connector layout
8 pin RJ45 (8P8C) female connector
at the cisco router
8 pin RJ45 (8P8C) male connector layout
8 pin RJ45 (8P8C) male connector
at the the cable
According to 3 reports in our database (3 positive and 0 negative) this pinout should be correct.

Is this pinout
Cisco Auxiliary port for Cisco 1000, 1600, 2500, 2600, and 3600 series routers visual pinout:
Cisco Auxiliary port for Cisco 1000, 1600, 2500, 2600, and 3600 series routers diagram
click to enlarge
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