Telstra has said it is aware of an issue hitting its mobile network, which appears to have taken out services across Australia.

According to complaints made to Telstra's Twitter account[1], users from all over Australia have fallen victim to the outage.

In May alone, the dominant Australian telco has suffered a pair of outages.

The first impacted 4G voice calls[2], which Telstra put down to "upgrades to mobile traffic control equipment in Telstra's Exhibition Street exchange in Melbourne".

The second took out Triple Zero[3] and mobile voice services, when a fibre link between Orange and Bowral suffered fire damage consistent with a lightning strike.

Australia's incumbent telecommunications provider had similarly suffered a 4G outage[4] in September last year, at the time saying it "very quickly" repaired the issue.

It last year also experienced an outage across fixed-line and mobile services due to a fire at its Chatswood exchange[5], which caused SMS messages to be delivered to the wrong people[6], along with an enterprise voice and data outage caused by faulty hardware[7], which both occurred during February.

Telstra last week revealed its earnings for the full year[8] to be at the bottom end of its AU$10.1 billion to AU$10.6 billion guidance range.

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