Have you ever heard noise in your headset while you are trying to talk on the phone or talk on the radio?
If you answered yes to these questions, you have a grounding issue in your dispatch center.
There are a number of acceptable methods to correctly bond and ground a building, electrical cabling and equipment. The most common misconception about grounding is that, what you currently have for grounding, is good enough. But, there is no such thing as too much grounding.