Yes, I did all this. But still I can not control Cisco SX20. I will take one moe shot with different USB to serial adapter cable and hope it will magically work. This is very frustrating. Please let me know if you still have any other suggestions. I ...

I somehow can not control Cisco SX20 with Extron D50 using DTP Crosspoint 864K inbuilt controller IPCP Pro350. I am using USB to serial adpater on SX20 side - female to female DB-9 adapter - TX,RX, and ground going to COM port of IPCP pro 350.  Even ...

Do I need to manually enable usb port so that I can do serial communication from web interface settings? I have been trying to control SX20 codec for last two days, but no luck. I am using Extron DTP Crosspoint 864K in order to control this SX20. Any...