Control of non Z-WAVE items via serial

I am thinking of purchasing the Vera 2 but want to make sure I can do the things I want to do. I have existing systems in my house that can be controlled via serial control. As long as I have flexibility to connect to a serial port using the manufacturers settings and issue commands, I’ll be fine. A primary example of how I’ll use this is to control my existing Radio Ra installation. I currently use my Universal Remote control MSC-400 to issue commands through a serial interface to control the system. I don’t want to replace my lighting system which is quite extensive with Z-WAVE devices. I may introduce both. Also, I need serial and IR control for various stereo systems and av systems throughout the house. I just need flexibility in dealing with outside interfaces that can carry through to the UI elements in the controllers for iPhone, iPads, etc.

Does anyone know if this is a reasonable expectation of this sort of system. I started out trying to switch to a Control4 system but there’s not enough flexibility in allowing me to do things without a dealer. That’s non starter for me.

Craig