Would you be willing to share any of your setup? I had a full Insteon house with an ISY controller before I started working with Crestron and now I¡¯d like to integrate the two, but I¡¯ve never had the time to dig in.
I have my CP3 talk to an ISY through REST commands. This allows me to control Insteon devices and scenes. I am also able to get some status feedback via query commands. Not very pretty, but it works sufficiently well in my modest setup.