Cable for KL6001
A cable between the GSM modem and the KL6001 serial terminal should be wired as follows.
This cable uses hardware handshaking (RTS / CTS). It has been tested with the Westermo GS-01 and the Siemens S53i.
Connection  | 9 pin SUB-D socket  | KL6001  | 
|---|---|---|
RxD  | 2  | 5  | 
TxD  | 3  | 1  | 
GND  | 5  | 3  | 
RTS  | 7  | 2  | 
CTS  | 8  | 6  |