The federal government is resisting political pressure to launch a sweeping independent inquiry into the entire triple-zero system after the second Optus outage in less than a fortnight.

The treasurer, Jim Chalmers, said Optus was guilty of an “absolutely shocking failure” but maintained the government would await the findings of an existing probe into the besieged telco before considering further steps.

As the communications minister, Anika Wells, prepared to confront the boss of Optus’s Singaporean owner, Singtel, at a meeting on Tuesday, the federal government faced calls to come down harder on the company and examine broader potential problems with the emergency services line. Optus under fire for triple-zero failure - podcast Read more

In the latest Optus outage, involving a

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