What happened

Infrastructure damage followed by cascading network effects caused intermittent voice calling for about eight hours. ACMA found Telstra breached emergency-call rules in relation to 1,433 attempted Triple Zero calls and accepted an enforceable undertaking requiring improved redundancy, diversity and incident communications. The available official summary does not describe the initiating damage as sabotage.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.