Dispatchers must be able to multi-task throughout their shift. For example, they may need to talk with a suicidal person while calling in the appropriate EMS and law enforcement personnel to respond, and still continue to handle other emergency and routine calls.
A "typical" 9-1-1 call can consist of anything from a complaint by a neighbor to a report of a multiple car accident with fatalities. Dispatchers need to be able to remain calm and collected in a tense situation, and be alert for signs of trouble in the background of calls they take.
New dispatchers have extensive on-the-job training, performed by trainers who have attended communication training school. However, you do not need any special schooling beyond a high school diploma to become a dispatcher. Prior law enforcement experience or knowledge is always helpful, but not required.
Dispatchers are responsible, dedicated people who work very hard to help keep the citizens and officers safe.