So if the original database showed the system as having DXNET cards, and you asked about "Hub" and "Node" (terms used in programming when using Impact Networking and the DXNET cards), then if you replaced the DXNET cards with DXPT1, you got the wrong cards. Those will not work in place of the DXNET card. They may look similar, but their firmware and functionality are different. If that's all that's really changed, I would suggest leaving the database as-is and getting the correct replacement cards.

My guess is that the fiber and transceivers are simply to get connectivity between two distant locations on your campus or site, so you can connect the two systems' cabinets together. Is that right?

Justin