×

Telstra CEO says external review finds network timing system caused July outage

By Thomson Reuters Sep 1, 2026 | 7:36 PM

Sept 2 (Reuters) – Telstra CEO Vicki Brady said on Wednesday an external investigation found that a technical event in its ​network timing system caused the mobile outage ‌that hit Australia’s largest telecoms firm in early July.

The findings add to scrutiny of Australia’s telecoms sector after a series of high-profile disruptions, including a 13-hour ‌outage ​at Singtel-owned Optus last ⁠year that affected emergency ⁠calling.

Brady said the review confirmed the outage was triggered by incorrect date information that spread through parts of Telstra’s mobile network after ​planned maintenance of its network timing system, in line with the company’s initial explanation.

Telstra ⁠did not treat network ⁠timing as a critical network capability, ​she said while responding to findings of the ​external review of the outage conducted under ‌a Senate inquiry.

“This outage should not have happened, and the findings released today help explain why it did,” said Brady, who joined ⁠Telstra in 2016 from Optus.

While Telstra managed the recovery effectively, the report found “gaps in ownership, visibility and operational ⁠support” for ‌the network timing system slowed ⁠efforts to identify the problem in ​the ‌early stages of the outage, Brady ​said.

Telstra said ⁠it accepted the review’s findings and would implement its recommendations, while adding that the steps were not expected to affect its full-year 2027 outlook.

(Reporting by Sherin Sunny in Bengaluru; Editing by ​Subhranshu Sahu)