Canberra is signaling an industry shake-up after hundreds of emergency calls failed to reach Triple Zero, with four incidents linked to fatalities. Optus, Australia’s second-largest operator and a subsidiary of Singtel, reported a technical failure that prevented 624 calls from connecting to emergency services (000), affecting customers across Western Australia, South Australia, New South Wales, and the Northern Territory. The Australian Communications and Media Authority (ACMA) has opened an investigation into compliance with the Emergency Call Service rules, which require carriers to ensure 000/112 calls connect regardless of network status.