All fire and Ems is dispatched through the New Castle County Fire Board, What happend is they switched dispatching EMS within the city from the city Dispatcher to the County Dispatcher where the city ambulance can talk to the county Paramedics Etc. The county Dispatcher will use the Dispatch Channel in accordance protocol, This was done to free up the city fire channels and put EMS under the same dispatcher. I confirmed this by a city fire official the other day.