South Australian Premier Peter Malinauskas has revealed his government was first told the major Optus outage that affected hundreds of triple zero calls only lasted two hours, despite the company now clarifying the disastrous disruption stretched for a total of ten hours.

Optus CEO Stephen Rue fronted the media on Friday night and announced that the nation’s second largest telecommunications company had experienced a major outage on Thursday which impacted hundreds of triple zero calls in South Australia, Western Australia and the Northern Territory.

Mr Rue, who waited a day and a half to announce the news, said the substantial "technical failure" to triple zero services occurred during a planned upgrade and that 600 customers were impacted resulting in the death of three people after th

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