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Guarantee over Alert Every Aussie Will Get
The 10-second alarm will help officials check for technical and operational problems before AusAlert is used for disaster and public-safety warnings.
On Monday July 27, Australia will conduct a nationwide test of the AusAlert warning system, sounding a 10-second siren on up to 25 million mobile phones.
The system utilizes cell broadcast technology used in more than 30 countries, transmitting warnings to compatible devices without needing phone numbers or relying on congested SMS networks.
This mass broadcast will override silent and Not Disturb settings; the National Emergency Management Agency advises concerned users to switch off devices or set them to "aeroplane mode" before 2pm on July 27.
Following a July 8 Telstra network outage, ACT Emergency Services Agency Commissioner Wayne Phillips emphasized that reliable systems remain critical for ensuring the public can reach triple zero during emergencies.
The government will fully implement AusAlert on October 1, following the July 27 test, to bolster public safety communication ahead of the 2026-2027 Bush fire season.