Overview

• A fault at a Dapto mobile tower cut service between about 3:00am and 12:20pm Sunday, affecting roughly 4,500 to 5,000 customers in the Illawarra.
• Optus identified nine failed Triple Zero calls during the window and says police have confirmed all the callers are okay after welfare checks.
• One person who needed an ambulance used another phone, and another person did not proceed with emergency assistance due to the failure.
• The company says the cause of the tower issue remains under investigation and that services were restored by early afternoon.
• The incident follows a larger September failure linked to a botched firewall upgrade that blocked about 600 emergency calls, triggering an independent review led by Kerry Schott and planned meetings involving Communications Minister Anika Wells and parent company Singtel.