Telstra’s timing experts were on break when the July outage hit Triple Zero
An external investigation says Telstra’s July national mobile outage was triggered while the two engineers with key system expertise were on a mandatory break. CEO Vicki Brady accepted the findings, citing the timing system not being prioritised, missed eight failed Triple Zero calls, and welfare checks not performed. The report points to an undocumented October design change and an unapplied GPS card software update.