PHOTO: BT FILE[SINGAPORE] The wholly owned subsidiary of national telco Singtel, Optus Mobile, was informed on Thursday (Jul 30) that the Australian Communications and Media Authority (ACMA) has filed proceedings in the Federal Court of Australia. The regulator is alleging that Optus breached several provisions of the Telecommunications (Emergency Call Service) Determination 2019 on 1,005 occasions on Sep 18, 2025. The incident led to two people being unable to receive emergency services in time. The latest proceedings follow earlier enforcement actions taken by the ACMA arising from another Optus outage in 2023. It is also seeking an order from the court for Optus Mobile to pay penalties for the above-mentioned contraventions.