We started to use KD for smaller jobs and the both times I have used them we have not been able to control via RS232. Checked to make sure control protocol was correct. Tried several db9 cables and tried to connect directly thru putty No luck. Am I missing something? Tech support kept saying that they have never seen this before. Yeah right. I called in 2 weeks ago with the same issue on an8x8. Thankfully we were able to control that one over IP.