Telstra CEO Vicki Brady returned after a break on July 9 as the company struggled with a nationwide network outage.
The failure blocked Triple Zero emergency calls and upended transport systems.
Brady made a public apology and said investigations are ongoing to find the cause.
The outage has led to transport delays nationwide.
Media and regulators are monitoring her response and next moves.
The incident sparked a chain of failures in Telstra’s core network, causing loss of voice and data services for millions of customers.
Emergency responders cited trouble reaching callers.
Government officials insisted on a full report.
Brady committed to strengthen systems and rebuild trust.