I am a fire dispatcher for the City of myrtle Beach fire dept. there are many things that iso looks at when evaluating for class 1, the most important thing is Qaulity control.. we are always being audited by the admin and corrective actions are taken if the calls are not dispatched properly,, being a dispatcher during a job if very tuff, not only dispatching and keeping track of time for the benchmarking,, but also keeping track of what companies are on scene and which ones are coming in. Dispatch times and onscene times are very important to ISO, from toneout till first unit on scene should be no longer then 3 mins, also if additional resources (ie electric and gas) being notifiedtimes are very important.