AUSTRALIA â An Optus outage disrupted some Triple Zero calls across four Australian jurisdictions on Friday, prompting police to conduct dozens of welfare checks and putting fresh pressure on the telco over the reliability of emergency communications.
The disruption began at about 1:30 p.m. on September 11 and affected some Optus customers in Victoria, South Australia, Tasmania and the Northern Territory. Optus said the voice-calling problem lasted about 75 minutes and was resolved at around 3 p.m.
The most serious impact involved emergency calls. Optus ultimately referred details of 41 calls to Victoria Police for welfare checks after callers experienced difficulty connecting to Telstra’s national Triple Zero emergency call operator.
Optus outage timeline and service impact
Customers experienced intermittent voice-call dropouts rather than a complete nationwide shutdown of Optus services.
Optus said its network monitoring systems detected the issue within minutes and technical teams were immediately mobilised. The company also activated established escalation procedures and contacted relevant stakeholders while services were being restored.
By about 3 p.m., Optus said the problem had been resolved. The immediate network issue was over, but the impact on emergency calls triggered follow-up action from police and regulators.
41 calls referred to Victoria Police
Triple Zero Victoria chief operations officer Paul Santamaria said Optus provided details of around 40 calls that had experienced difficulty connecting to the national Triple Zero operator.
Optus later said 41 calls had been referred to Victoria Police for welfare checks. Police said about 40 checks were completed and there were no adverse outcomes or issues of note.
The distinction is important. The 41 referrals should not automatically be described as 41 confirmed failed emergency calls. Authorities have said the calls experienced connection difficulties and were followed up to make sure the people involved were safe.
South Australia also conducts welfare checks
The emergency-call impact extended beyond Victoria.
South Australia Police conducted two welfare checks connected to the outage and said both were completed without incident.
Tasmania and the Northern Territory were also among the jurisdictions where some Optus customers experienced intermittent call dropouts. Authorities are expected to establish the full emergency-call impact across all affected areas.
Triple Zero safeguards face fresh scrutiny
Triple Zero is Australia’s main emergency number for police, fire and ambulance services. Telstra operates the initial national Triple Zero emergency call answering service before calls are transferred to the appropriate agency.
Mobile emergency calling also has safeguards designed to allow calls to use another available compatible network where possible if a customer’s normal provider is unavailable.
The latest disruption therefore raises questions about the performance of emergency-call fallback arrangements and the ability of Australia’s mobile networks to keep urgent calls moving during a technical failure.
Victoria government calls repeated outages unacceptable
Victorian Health Minister Ingrid Stitt described the incident as “incredibly disappointing and unacceptable”.
She said it was the third outage involving either Optus or Telstra in the previous 12 months and said the Victorian government would urgently raise the issue with the telcos and the Commonwealth.
The concern is significant because a routine dropped call may be an inconvenience, while disruption to Triple Zero can create a public-safety risk within minutes.
Federal authorities prepare investigation
A spokesperson for Communications Minister Anika Wells said telecommunications companies have a legal obligation to ensure people can call Triple Zero when they need emergency assistance.
The Triple Zero Custodian and Australian Communications and Media Authority are expected to examine whether those obligations were met.
The regulator has already taken Optus to the Federal Court over an earlier Triple Zero outage. The ACMA case against Optus alleges breaches involving access to emergency calling and the carriage of Triple Zero calls during the September 2025 incident.
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Telstra outage adds to emergency-call concerns
The latest Optus disruption comes only months after a major Telstra outage on July 8, 2026, when 604 Triple Zero calls were unable to connect.
That incident added to concerns about the resilience of Australia’s emergency communications system when one of the country’s major telecommunications networks suffers a technical failure.
Dependence on mobile networks has also drawn attention overseas, including during the recent AT&T outage in Texas, where service disruption affected thousands of customers.
Optus remains under pressure over 2025 failure
Optus is already facing intense scrutiny over its September 2025 outage, which lasted almost 14 hours and was linked to two deaths.
An independent review found that 75 per cent of Triple Zero calls failed from 605 attempts during that outage.
ACMA has alleged 1,005 contraventions of emergency-call obligations in connection with the incident.
The changes introduced after that failure are especially relevant to the latest disruption. The Optus Triple Zero outage inquiry and reform measures provide important context as regulators assess whether emergency-call protections have improved.
Current status for Optus customers
Optus says the latest voice-service issue has been resolved. Victoria Police reported no adverse outcomes from the welfare checks it conducted, while the two South Australian checks were also completed without incident.
Investigators are now expected to examine the cause of the outage, the exact number of affected emergency calls, the performance of backup routing and whether Optus met its legal and notification obligations.
Those findings will determine whether Friday’s disruption was a contained technical failure or evidence that additional safeguards are needed to protect Australians trying to reach emergency services during future network outages.
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