Australian telco giant Optus is investigating another network outage that led to nine failed triple-0 calls on the NSW south coast.
Optus has issued a statement saying the problem stemmed from a mobile phone tower site in Dapto.
It affected calls between 3am and 12:20pm on Sunday, including calls to the triple-0 network.
Australian correspondent Oliver Peterson says this incident will cause significant damage to the relationship Optus has with its customers.
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Heather du Plessis-Allan Drive