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AAP
AAP
Farid Farid

'Unacceptable': second triple-zero Optus outage slammed

NSW is now embroiled in the Optus emergency line failures after an outage in the Dapto region. (Erik Anderson/AAP PHOTOS)

Optus has apologised for a second triple-zero outage in as many weeks as failures to re-route calls through other networks are back in the spotlight.

The latest blackout - dubbed "unacceptable" by NSW Premier Chris Minns - is linked to a mobile phone tower in NSW that affected 4500 users in the Dapto area on Sunday between 3am and 12.20pm.

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