Australia's telecommunications regulator is investigating the latest triple-zero outage. Photo: Bianca De Marchi/AAP PHOTOS

Australia is being urged to tame the "wild west" culture plaguing the telco industry after Optus experienced another serious triple-zero outage.

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The major outage has been linked to four deaths and was the second time in two years an Optus network issue prevented Australians accessing the emergency line.

Optus chief executive Stephen Rue faces mounting pressure to step down after revelations the telco giant failed to implement recommendations from a review into

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