HONG KONG, July 18, 2025 -- China Mobile International Limited (CMI) officially activated the Southeast Asia–Japan Cable 2 (SJC2) on 16 July 2025. Spanning 10,500 kilometers, this revolutionary submarine cable system is set to redefine connectivity across the Asia-Pacific region.
SJC2's main trunk links Singapore, Hong Kong China, and Japan, with additional branches covering other key Asia-Pacific countries and regions. Employing the latest optical wavelength division multiplexing technology, the cable is capable of transmitting more than 126 terabits per second (Tbps)[i]. SJC2 enhances submarine cable infrastructure in the region with additional capacity, route diversity, and resilience by strengthening the redundancy of the network to meet the increasing demand for connectivity within Southeast Asia and East Asia. This will contribute to a more stable communications environment to power AI and other bandwidth-intensive applications.
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