Insiders say the equipment behind the Triple Zero outage was flagged for replacement years ago, but the work landed in the “too hard” basket.

The widespread outage is affecting mobile calls and data connections, and has even prevented some businesses from processing payments.

The telco says a “secondary issue” is stopping some Triple Zero calls from connecting, hours after it declared the day’s outage resolved.

Police in several states are checking on people who could not reach Triple Zero, after a second fault overnight again stopped some emergency calls.

Police in several states are checking on people who could not reach Triple Zero, after a second fault overnight again stopped some emergency calls.

Some Triple Zero calls are still experiencing issues, Telstra says, as it races to fix a second network issue.

More than 20 of the 300 Triple Zero calls that failed during the nationwide outage were from Queensland, with Telstra confirming a second issue had threatened emergency calls…

Telstra says work is ongoing to resolve a "secondary issue" impacting customers trying to make calls on its network, including to Triple Zero, but some people may still be unable…

No longer will Telstra be able to comfortably estimate that those affected numbered into the thousands. This second issue will have a long tail.

Carrier says some still unable to connect to emergency hotline a day after mobile network went down

Government agencies and academics both recently warned Telstra it was vulnerable to the type of error that caused this week's national outage.

Insiders say the equipment behind the Triple Zero outage was flagged for replacement years ago, but the work landed in the “too hard” basket.