Opposition leader Angus Taylor has come to the defence of Liberal senator and shadow communications spokesperson Sarah Henderson, after she made two test calls to the triple zero emergency line during Wednesday's major Telstra network outage — a move that drew swift condemnation from the federal government and raised questions about the legality of her actions.

The incident has ignited a political firestorm, with Labor ministers labelling Henderson's conduct reckless and irresponsible, while the Coalition insists she was simply doing her job. The controversy unfolded against the backdrop of one of the most significant telecommunications failures in recent memory, an event that sits among the more disruptive infrastructure crises in 2024 in Australia.

What happened during the Telstra triple zero outage

Telstra's network disruptions began around 4:30am on Wednesday, knocking out mobile data, EFTPOS terminals, and business and transport services across the country. While the company largely resolved its major connectivity issues by mid-morning, a separate fault affecting the triple zero emergency service persisted into Thursday, causing additional disruption for customers trying to reach emergency services.

Telstra chief financial officer Michael Ackland revealed at a press conference on Thursday that the company had completed 639 welfare checks after identifying failed emergency calls during the outage, despite around 33,000 triple zero calls successfully connecting to emergency services.

  • 230 callers responded to an SMS advising they did not require assistance
  • 402 cases required follow-up phone calls
  • 170 cases were referred to police for further welfare checks
  • Seven callers confirmed they needed help and were passed to emergency services

"Any one missed call is unacceptable," Ackland said, adding that the welfare check process existed precisely to follow up with people whenever an emergency call failed to connect.

By Thursday afternoon, Telstra said it had "implemented a solution" that addressed the triple zero issue, and that customers could now "feel confident" calling the emergency line. Earlier that morning, overnight work had reduced the error rate by approximately 90 per cent. For a fuller breakdown of the failed calls and welfare check figures, see our earlier coverage on how more than 600 triple zero calls failed during the nationwide outage.

Henderson defends triple zero test calls — but accepts the criticism

Senator Henderson, the Coalition's communications spokesperson, confirmed she placed two calls to triple zero on Wednesday to test whether the emergency service was functioning during the outage. Making false or improper calls to triple zero is a Commonwealth criminal offence carrying a maximum penalty of three years in prison.

Speaking to Sydney radio station 2GB on Thursday morning, Henderson said she was acting in her capacity as shadow minister and needed to determine whether the critical service was actually operating.

"I was simply, as the shadow minister for communications, making those initial calls to work out whether the system was actually operating," she said. "I accept the criticism, but what I will say is that I am in a unique position holding this government to account."

Opposition regional communications spokesperson Anne Webster also backed Henderson's conduct, arguing the test calls were necessary given the shadow minister's oversight role.

Taylor turns fire on Communications Minister

Taylor mounted a robust defence of his colleague on Thursday, framing the episode as evidence of ministerial failure rather than senatorial recklessness. He pointed to what he described as a seven-hour absence by Communications Minister Anika Wells during the crisis.

"If she hadn't been absent for seven hours, Sarah wouldn't have had to do these things," Taylor said. "These actions were not illegal, and they were made necessary by complete and utter failure from this minister — and that should be the focus of the press, and it should be the focus of the nation."

Taylor dismissed suggestions the calls were vexatious or constituted a hoax, insisting Henderson was carrying out her responsibilities as Coalition communications spokesperson.

Labor condemns the calls as reckless

The government's response was pointed. Industry and Innovation Minister Tim Ayres said he was shocked by the revelation and urged the public not to follow Henderson's lead.

"It's utterly irresponsible. I just don't know why anybody would do that, but I'd certainly say nobody should follow her example," Ayres told radio on Thursday.

Communications Minister Wells, meanwhile, indicated that after services were restored, investigations could proceed and penalties administered. Penalties for telcos that breach their triple zero obligations have been increased to $30 million. Asked whether individuals within Telstra should face punishment, Wells said her immediate focus was on getting services back online.

The outage has renewed broader questions about Australia's reliance on a small number of telecommunications providers for critical infrastructure. Some transport networks remained slow or disrupted into Thursday, even after Telstra declared its primary mobile issues resolved. Details on how the crisis unfolded in its early stages are available in our report on the Telstra outage that triggered the triple zero crisis and widespread welfare checks.