Telstra is continuing efforts to fix a "secondary issue" impacting customers attempting to make calls on its network, including calls to Triple Zero, Australia's emergency service number. Despite progress, some users may still be unable to contact emergency services.

The telecommunications giant confirmed on Thursday that the frequency of errors when calling Triple Zero has been reduced by approximately 90 percent. Telstra stated, "Our investigation into the root cause is still underway, but we're confident we've identified a software defect and have been able to isolate it."

This ongoing problem follows a major nationwide outage that disrupted phone and internet services for millions of Australians. Telstra reported that while the initial fault—linked to malfunctioning time synchronization nodes within network data centers—has been fixed, the secondary issue continues to affect emergency calls.

During the outage peak on June 8, connection issues were mostly reported in Australia's eastern states. As of 5:30 pm that day, Telstra had conducted 395 welfare checks on individuals unable to make Triple Zero calls. The company explained, "In these cases, when you call Triple Zero you will receive an error message, and your phone will try to connect to an alternative mobile network."

Communications Minister Anika Wells announced that the Australian Communications and Media Authority will investigate the outage, including questioning Telstra about the incident's details.

Sources