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Boosting Australia’s connection to the world with Southern Cross

Business and Enterprise

Posted on October 2, 2019

3 min read

As we continue to develop the fast, high-capacity, low-latency networks that connect Australians to each other, we must also think about how we connect to the rest of the world. That’s why we’ve been working hard with our partners at the Southern Cross Cable Network to strengthen our investment in current infrastructure while planning for future growth.

72,000 leagues under the sea

You could be forgiven for thinking that connectivity between countries was predominately handled by satellites and other space-based infrastructure. In fact, the real solutions are buried deep beneath the waves. Subsea cables form a crucial part of our international network infrastructure.

Telstra operates the largest intra-Asia subsea cable network in the region, and we’re growing our footprint in Asia-Pacific with critical new cable paths. Our subsea cable network currently spans more than 400,000 kilometres – or just under 72,000 nautical leagues – under the sea. Jules Verne would be proud!

Such a vast network is enough to circle the globe more than 10 times over. This elaborate and impressive network of fibre optic cables continues to expand as we keep pace with the voracious appetite Australians have for high-speed data. But more than just planning for capacity, we’re mindful that we need to build resiliency at the same time as speed.

That’s where our investment with Southern Cross Cable Network comes in.

Almost 80 per cent of all internet traffic to Australia comes from the US, which makes the need for a high-speed and low-latency connection between our two nations paramount. Our new investment in the Southern Cross Cable Network’s (SCCN) existing cable infrastructure as well as the upcoming NEXT cable is about safeguarding that connectivity for the future.

Telstra has acquired a 25 per cent equity interest in the existing Southern Cross Cable Network, joining existing shareholders in the project. It follows several other investments in our subsea cable infrastructure, including:

  • A significant increase in fibre capacity to our subsea infrastructure using Infinera’s Infinite Capacity Engine 4, and
  • The launch of a new rapid restoration service on our assured availability “Always on” service – a world-first offering to key routes in Asia – reducing restoration time from within eight hours to just minutes.

The investment in Southern Cross builds on our existing footprint across Asia-Pacific where we carry over 30 per cent of the region’s active capacity.

Alongside these investments, we’re excited to also partner with SCCN as one of the anchor customer for its upcoming NEXT cable. Designed to carry 72 Terabits per second of traffic, the equivalent of simultaneously streaming 4.6 million ultra-high definition movies, Southern Cross’s NEXT will meet our customers’ growing data requirements well into the future.

With the completion of the Southern Cross NEXT cable scheduled for January 2022, Telstra customers will have access to capacity across the three routes across the Pacific, connecting Australia, New Zealand, Fiji and the United States, maximising diversity and resiliency.

Thanks to our subsea investments, we are now well placed to meet the growing data requirements of our customers now and into the future, right across the Asia-Pacific region.