A signal is sent through every available communicator you have (Phone Line, Internet and/or Cellular). Our central station receives this signal and acts in accordance to how the account was set up. In the most common scenario, the operator will contact the premises first to give a chance to cancel an accidental alarm. Should someone answer this call, they would need to provide a valid passcode to cancel the alarm. If no one answers or a valid passcode is not provided, the operator will then dispatch the appropriate authorities (Fire, Police, Medical). The operator will then call everyone on your call list until someone agrees to respond to the alarm. (For example, meet the police on site). We have complete flexibility to respond differently to different alarms to meet your needs.