Australia-Japan Cable

The Australia-Japan Cable, or AJC, is a submarine telecommunications cable system linking Australia and Japan via Guam that became operational in 2001. It had an original design capacity of 640 Gbit/s, but was initially equipped to utilise only 80 Gbit/s of this capacity. In April 2008 a capacity upgrade was completed, bringing equipped capacity to 240 Gbit/s. Design capacity was also increased to 1000 Gbit/s. Further upgrades will increase equipped capacity to meet increasing demand.^[1]

The AJC network employs a collapsed loop design that features diverse landings in Australia, Guam and Japan and diverse routing at water depths less than 4000m. This design reduces cost by utilising a common sheath in deep water, where risk of failure is low, but provides redundancy to mitigate risk in shallower waters and in the landing stations.

The network supports a range of access interfaces, including SDH at STM1, STM4, STM16 and STM64 levels, 2.5G clear, Direct Wavelength Access, Gigabit Ethernet and 10 Gigabit Ethernet. A range of protection options are available, including SDH span and ring protection and 1:n wavelength redundancy.

The cable has landing points in:

1. Shima, Japan
2. Maruyama, Japan
3. Tanguisson, Guam
4. Tumon Bay, Guam
5. Oxford Falls, Sydney, Australia
6. Paddington, Sydney, Australia

References

1. ^ Australasian Region, International Cable Protection Committee.

External links

• Australia-Japan cable website (Flash based)
• gif image of cable route
• cable landing license from the FCC

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