I've purchased the serial version of the gateway. First connected the serial interface connector of the gateway directly to the serial interface of the PC running Ubuntu Server. No respons. Then I purchased a serial extension cable (male-female) and still no respons. I think syslog should show some message, right? I tried connecting the power first and then the serial cable and the other way around. Am I doing something wrong? Probably something stupid...

Thanks in advance.
Joost