Have a couple of systems loaded up on a bench now. I was able to load the Phone Manager, configure a 6940 and test it with (2) NIC's. Then load a Virtualbox with Mitel Standard Linux/MBG after that and configured the NIC's WAN to LAN (shared the LAN with Phone Manager). The Virtualbox will come up and assign another address on its own. I can get to admin side of each system then. Setup another box and system with (3) NIC's same way WAN to LAN for the MBG and the third NIC for the Phone Manager. Can access both admin portals on 2 or 3 NIC system. It seems that the Virtual MBG will work around the Phone Manager to configure its self.
I'm trying to come up with a simple clean way to bring in (1) box for a small site to have a Border Gateway and Phone Manager
Problem I have now is getting the softphones working. I'm getting " Hostname (IP address) not verified: certificate: (the certificate) error. Not sure how to fix this issue yet.