Southern Cross provides fast, direct and secure high capacity services between Australiasia and the United States West Coast. If you want to know more about the network that enables this to happen, or the what and how of the leading-edge technology Southern Cross uses, you've come to the right place.

Access Points

Southern Cross has Cable Stations and Access Points at 10 locations providing convenient interconnect access to the Southern Cross system.


Details of available backhaul companies and relevant contact info.

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Construction of the Southern Cross network began in March 1998. The Ready for Service (RFS) for Phase A of the network - comprising nine stations and all segments except Segment D (from Hawaii to California) - was achieved on 15 November 2000. Completion of the fully protected loop network (RFS Phase B) was achieved on 28 February 2001.


The network is almost 30,500 km in length, including 28,900 km of submarine cable incorporating around 500 optical repeaters (placed every 40-70 km), and 1,600 km of terrestrial cable. There are nine cable stations (two each in Australia, New Zealand, Hawaii and the US mainland, and one in Fiji) and additional access points in San Jose, Palo Alto, Los Angeles, and Seattle as well as Sydney.

Both cables in the network contain six optical fibres (3 fibre pairs) between Sydney and Hawaii, and eight fibres (4 fibre pairs) between Hawaii and the US West Coast.

Current Capability


The Southern Cross network capacity has undergone a number of major upgrades and expansions from the original 20Gbps in November 2000.

The current expansion (Phase J) will increase total lit network capacity to approximately 12.8Tbps over the next few years, and will utilise 100Gbps+ flexible grid  wavelength technology.

Southern Cross was originally designed to deliver 120Gbps of fully protected capacity (240Gbps across the network). Following the introduction of the latest 100Gbps technology the current system potential is estimated at >22Tbps.

  Nedonna Landing

Ile de Re ROV


 Phase J1 (Underway): Augment with 100Gbps+ technology for lit capacity of 7.4Tbps 

Phase H2D (Jun 16): Augment with 100Gbps technology for lit capacity of 5.4Tbps 

Phase H2C (Jun 14): Augment with 100Gbps technology for lit capacity of 3.6Tbps

Phase H2A/B (Jun & Oct 13): Implement 100Gbps technology for lit capacity of 2.7Tbps

Phase H1B (Feb 13): Implement 40Gbps technology for total lit capacity of 2Tbps

Phase H1A (Aug 12): Implement 40Gbps Ciena technology for total lit capacity of 1.6Tbps

Phase G (Dec 08 - Mar 10): Alcatel-Lucent phased expansion for total lit capacity of 1.2Tb

Phase E/F (Sep 02-Jan 04): Introduction of Alcatel 10Gbps technology. Lit capacity 480Gbps

Phase D (Dec 01): 2.5Gbps technology expansion. Lit capacity 160Gbps

Phases A-C (Nov 00-Jun 01): Staged RFS of network, with lit capacity of 80Gbps