RealPort 8 From Linux to Windows

I am having an issue with setting up the 8 port with Windows. I can install and see the Interface but once connected to a Device… PBX or Voicemail or On Demand Movies … There is not communication. Is there a pinning difference from a unix box to Windows? It is the only diffence I can think of.

There is no difference in pinouts. Where do you run the Realport driver on, the Linux or Windows box? Have you tried running a loopback test on the serial port to see if you can echo data back to yourself? That would be a good place to start, because if you can echo data, the serial port is good and this might indicate a cabling/application issue rather than with the serial port.