A method of responding to alarm includes receiving an alarm message from an alarm system at a site. The alarm message may indicate that an alarm has been triggered at the site. In response to receiving the alarm message, a responder may be identified to respond to the alarm. A call message may be automatically sent over a network to a mobile alarm device in the possession of the responder. A message may be received back from the mobile alarm device accepting the call message for the alarm. In some embodiments, the responder's response to the alarm (for example, time to arrive at the alarm, time to clear the alarm) is automatically timed and monitored based on messages received from the responder over the mobile alarm device.