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Since the Network Ready for Service Date of December, 2001, the AJC network has incurred 3 submarine faults. This number of faults is in line with industry expectations for such a cable network. In all three cases, the repair operations were completed in about 7 days utilising the contracted cable ships.

During the repair operations, the protected transmission services continued to operate as designed, with traffic routed on the alternate network path. The AJC Network is monitored on an ongoing basis by the AJC NOC and the landing stations.

The AJC Network is monitored on an ongoing basis by the AJC NOC and the landing stations. The optical transmission performance of the AJC network continues to meet the relevant industry standards for performance and availability. The network has been successfully upgraded from the initial installed 10G technology to 100G technology in the latest upgrade in 2013/2014.

Facts & Figures

12,700 km

12,700 km

Total Length


Deep Water


Deepest Water


Trench Cross

Key Points

  • Bit Error Rates better than ITU-T Rec G.826/828 with associated Q-Factors stable and with good end of life margin.
Network Protection
  • SDH Span and ring switching operated in accordance within ITU-T Rec G.841.
  • Wavelength protection also available.
Optical Fibre Cable and Repeaters
  • Continuous Optical Time Domain Reflectometry measurements indicate stable performance with no anomalies.
  • The figures of 36msec Sydney-Guam, 20msec Guam-Japan and 56msec Sydney-Japan are as expected for these distances. ITU-T Recs Y.1541 and Y.1542 indicate that latency in the terrestrial components of a User to User connection largely subsume differences in the international component.
  • The AJC equipment complies with relevant ITU-T Recommendations resulting in totally successful interoperability with similarly compliant backhaul or connectivity equipment.