Clearcom stopped working.

Hey I would like to start by saying lighting guy trying to fix coms.

We have a clear-com Ms-702 main station. Last night just as the show started coms went down. After playing with it this morning I have come to realize that its not sending single to all my wall ports. Which mean all of my headsets have no signal. But the rack works fine. I can hear myself on it no problem. How do I fix this? Is there a way to reset everything? Please and thank you.