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  2. 4G connectivity in Australia - Wikipedia

    en.wikipedia.org/wiki/4G_connectivity_in_Australia

    In September 2014, Optus launched LTE Carrier Aggregation in Sydney, Melbourne, Brisbane and Adelaide. Optus markets LTE Carrier Aggregation as "4G Plus". Optus combines two 20 MHz channels of 2.3 GHz spectrum. [6] In Brisbane, Optus has up to 4CA band combinations using Band 1, 3, 7, 28 and the total bandwidth is 55 MHz.

  3. Optus - Wikipedia

    en.wikipedia.org/wiki/Optus

    Optus Mobile customers reported that their phones showed 'SOS' on the signal indicator, which is a sign the regular network is down, but mobile phones still have access to alternate networks in the event of an emergency call by using a so-called camping mechanism; however, Optus landlines were unable to make emergency triple-zero calls.

  4. Australian telco Optus tells lawmakers it had no plan to ...

    www.aol.com/news/australian-telco-optus-tells...

    SYDNEY (Reuters) -Australia's second-largest telco, Optus, had no crisis plan when a network-wide outage left nearly half the country without phone or internet for 12 hours, an executive told ...

  5. List of mobile network operators in Asia and Oceania

    en.wikipedia.org/wiki/List_of_mobile_network...

    4G : FDD LTE : B1/B3 (Roaming on Truemove H, B8 prohibited) 4.5G : Up to 2xCA B1+B3, nationwide 4x4 MIMO on B3, 256/64QAM 4G Calling ( VoLTE , ViLTE ) : Unsupported

  6. Australia takes Singtel-owned Optus to court over 2022 cyber ...

    www.aol.com/news/australia-takes-singtel-owned...

    About 10 million Australians, 40% of the population, are Optus customers and could not use smartphones, broadband internet or landlines Australia takes Singtel-owned Optus to court over 2022 cyber ...

  7. Amaysim - Wikipedia

    en.wikipedia.org/wiki/Amaysim

    Amaysim Australia Ltd. is an Australian provider of mobile phone plans. Amaysim operates as a mobile virtual network operator on the Optus mobile network, [1] and specialises in offering a range of SIM-only mobile plans. As of June 2024, Amaysim had over 1.5 million mobile subscribers.

  8. Singtel assesses potential cost of Optus Australian data breach

    www.aol.com/news/singtel-assesses-potential-cost...

    MELBOURNE (Reuters) -Singapore Telecommunications said on Monday it was assessing the potential cost of a massive cybersecurity breach at its Optus arm, Australia's second-largest telco, 12 days ago.

  9. 2023 Optus outage - Wikipedia

    en.wikipedia.org/wiki/2023_Optus_outage

    Optus is an Australian telecommunications company owned by Singtel. It is the second-largest wireless carrier in Australia, serving over 10 million customers in part with a 4G network that is reachable by 96.9% of the population. [8] Around 25% of Australians use Optus for their cellular service and 19% for broadband internet. [9]

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