The KJCN(or Korea-Japan Cable Network) is a 500-km repeaterless submarine cable system with diverse cable routes connecting Korea and Japan, with 12 fiber pairs on each route and an initial design capacity of 2.88 Tbps. The KJCN was ready for service on March 23, 2002, before the 2002 FIFA World Cup Korea/Japan.


System Profile

Cable System:

  • KJCN, or Korea-Japan Cable Network

Cable Length:

  • 500 Km, each of 250 Km over both south and north cable routes

Design Capacity:

  • 2.88 Gbps
  • 12 fiber pairs on each route
  • 10 Gbps x 24 wavelength over each fiber pair

Lit Capacity:

Ready for Service Date:

  • March 23, 2002

Investment Type:

  • Consortium

Initial Investment:

  • US$ 60 million


  • KT, 20% stake
  • NTT, 20% stake
  • Softbank (Japan Telecom), 20% stake
  • KEPCO (Kyushu Electric Power Co.), 40% stake

Landing Stations:


  • Fujitsu (award of US$ 40 million)

KJCN Cable Map

KJCN Cable Map

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