Various devices cables and adapters schematics  > Baytech pinouts
Baytech RPC-3 RJ45 to DB9 null modem serial cable
Baytech RPC-3 EIA-232 connector Pin
Baytech RPC-3 EIA-232 connector Pin
Direction PC serial port Pin
PC serial port Pin
rpc-3 TX 4 --> 2 pc RX  
rpc-3 RX 5 <-- 3 pc TX  
rpc-3 RTS 3 --> 8 pc CTS  
rpc-3 DTR 1 --> 6 pc DSR  
GND 2 --- 5 GND  
rpc-3 CD 8 <-- 1 CP  

Should be connected via a RJ-45 rollover cable


8 pin RJ45 (8P8C) male connector layout
8 pin RJ45 (8P8C) male connector
at the PC serial port
9 pin D-SUB female connector layout
9 pin D-SUB female connector
According to 5 reports in our database (5 positive and 0 negative) this pinout should be correct.

Is this pinout
Baytech RPC-3 to DB9 serial port adapter visual pinout:
Baytech RPC-3 to DB9 serial port adapter diagram
click to enlarge
Source(s) of this and additional information:
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