The Southern Cross Cable Network forms a protected ring network among 9 cable landing stations (two each in Australia, New Zealand, Hawaii and the US mainland, and one in Fiji) and an access point in San Jose, California. The Southern Cross Cable Network contains 3 fiber pairs between Sydney and Hawaii, and 4 fiber pairs between Hawaii and the US West Coast, with almost 30,500 km in length, including 28,900km of submarine cable and 1,600km of terrestrial cable. The Southern Cross Cable Network is working with 10 Gbps DWDM system with design capacity of 1.2 Tbps, and the system is capable of upgrading with 40 Gbps DWDM technology. The Ready for Service (RFS) for Phase A of the Southern Cross network - comprising all 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.

On July 30, 2013, Southern Cross announced the completion of upgrade with Ciena's 100G technology, increasing its lit capacity to 2.6Tbps and system capacity to 12Tbps.