The user arms the system with the keypad. Once a detector notes an event, it transmits this to the Cpu. The CPU turns the local siren on, and reports the information to the monitoring station. The monitoring station receives accurate information as to the event. (i.e. back door contact, living room motion, master bedroom glass break...)
If it is a burglary signal the monitoring station calls the premise to verify the alarm. If the client caused the alarm they can cancel response and avoid a false dispatch by giving their proper code. If nobody answers or somebody answers but does not give the station a proper passcode, the police will be dispatched.
If it is a fire signal the monitoring station dispatches the fire department immediately. They then call the premise to verify the alarm. Once again, if somebody answers and wants to cancel the alarm they must have a proper passcode. The reason we dispatch first and verify second in the case of a fire alarm is that when it comes to fire, seconds can mean the difference between life and death.
If it is a panic signal the monitoring station dispatches the police immediately. The police place a higher priority on panic signals than burglary.
If it is a medical alert the proper medical authorities are dispatched and keyholders notified. The client file specifies who to call for every client.
If it is a low temperature signal or water detector signal, the monitoring station calls the premise first, If nobody is available, they begin calling the keyholder list until somebody is reached.