In order to start using Active911 with real world devices - cell phones, smartphone, tablets, and so on - you need to connect those devices to your Active911 account.
https://active911.atlassian.net/wiki/spaces/AED/pages/edit-v2/155287975
The information on this page is intended to help the admin of an agency make the correct selections while adding devices for their user
This feature allows the user to bulk upload a device list.