On June 30, 2025, the Australian Communications Alliance(CA) officially released AS/CA S042.1:2025, S042.4:2025 and S042.5:2025 standard. The main updates of the new version of the standard are as follows:

• Incorporating emergency cell broadcast requirements into the National Messaging System (NMS);
• Removed the relevant requirements for 3G (UMTS);
• AS/CA S042.4:2025 and AS/CA S042.5:2025 add technical requirements for LTE B26/B255/B256 and 5G NR n26 bands, respectively. Among them, the B255 and B256 frequency bands are set for IoT NTN services. The B26/n26 frequency band is subject to FCC regulations.

The new version of the standard has a 12-month transition period. During this period, the equipment can be tested or evaluated according to the S042 2022 series standard or the S042 2025 series standard. From 30 June 2026, all relevant equipment imported into Australia for the first time must comply with the requirements of the S042 2025 series standard.

Click on the standard number above to view the original standard.