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Mass Notification System
All you need to know about your mass notification system
Screen Takeover
Methods of Sending
- What Is a Screen Takeover Alert?
- What Phone Number(s) are SMS messages sent from?
- What Phone Numbers Will I Receive Texts/Calls (last updated 1/22/26) From?
- How to Send a Mass Notification (in the 911Cellular Portal)
- Mass Notification System (MNS) — Choosing Your Sending Methods (Configuration Options)