The biggest unanswered questions about the Optus outage | The Business | ABC News

Telco experts are still questioning how a routine software upgrade could take down one of Australia’s major providers for up to 14 hours. The embattled Optus CEO – Kelly Bayer Rosmarin – is preparing to front a Senate inquiry on Friday where she’ll likely face some tough questions about the incident. Telecommunications consultant Paul Budde says the disastrous outage is estimated to have cost businesses hundreds of millions of dollars and has entered the record books as one of the biggest telco fails in history.


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