Internal Network Video conference on TV

I have a couple of offices spread across town. I have antennas making it so we have fast ethernet connectivity between the offices without using our internet connection (which is slow in my area).

To try and bring everybody working closer together, I’d like to put a couple of big flat screen TVs with cameras so that each office will have a “window” into the other office. Thought it would create a cool dynamic.

Is there a way to do this with FreePBX? I know I could do this with skype, but want to avoid using the bandwidth of the internet connection.

Appreciate any ideas.