Australia–Japan Cable

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Australia–Japan Cable (AJC)
AJC-Cable-route.png
Owners:
Telstra, BT, Verizon Business, Softbank
Landing points
  1. Shima, Japan
  2. Maruyama, Chiba, Japan
  3. , Guam
  4. Tumon Bay, Guam
  5. Oxford Falls, Sydney, Australia
  6. Paddington, Sydney, Australia
Total length12,700 km
Topologycollapsed loop design
Design capacity640 gbit/s (2001)
1000 gbit/s (2008)
>4000 gbit/s (2013)[1]
Currently lit capacity80 gbit/s (2001)
240 gbit/s (2008)
320 gbit/s (2013)[1]
TechnologyFibre-optic
Date of first use2001

The Australia–Japan Cable, or AJC, is a 12,700 km submarine telecommunications cable system linking Australia and Japan via Guam[2] that became operational in 2001. It had an original design capacity of 640 Gbit/s, but was initially equipped to use 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.[3]

The AJC network employs a design that features diverse landings in Australia, Guam and Japan and diverse routing at water depths less than 4000m. This design reduces cost by using 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 a design life to 2026.

Landing points[]

  1. Shima, Japan
  2. Maruyama, Chiba, Japan
  3. , Guam, unincorporated territory of the United States
  4. Tumon Bay, Guam, unincorporated territory of the United States
  5. Oxford Falls, Sydney, Australia
  6. Paddington, Sydney, Australia

Ownership[]

AJC is jointly owned by Telstra, BT, Verizon Business and Softbank.[2]

See also[]

References[]

  1. ^ a b "Home - Australia-Japan Cable".
  2. ^ a b Australia-Japan Cable completes refinancing Archived October 11, 2009, at the Wayback Machine
  3. ^ Australasian Region, International Cable Protection Committee.

External links[]

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