Abstract: An arrangement for selectively altering the serving of emergency serving areas ESAs. Normally emergency serving areas are grouped and all calls for a group are handled by teams of agents at public safety answering point (PSAP) positions. For special emergencies such as a fire it is deskable that all traffic from one emergency service area be specially routed either to a single destination such as one PSAP position or a telephone in a fire station or to a special group of agents. This is accomplished by assigning a different routing telephone number to the emergency service number ESN corresponding to each emergency service area and using that routing telephone number ESN for routing calls. The calls are routed first to a single agent position which is normally not logged in and then on a default basis to an automatic call distributor (ACD) number for routing to a team of PSAP agents.