The Flag North Asian Loop(FNAL) or Reach North Asian Loop (/RNAL) each represents a part of a 9,800 km Intra-Asia submarine cable system, the North Asian Loop submarine cable system linking Japan, Korea, Taiwan, Hong Kong in a ring configuration.

The entire FNAL/RNAL submarine cable system consists of 6 fiber pairs, initially designed with 64x10 Gbps DWDM technology. Reliance Globalcom (FLAG Telecom) and PCCW Global (Reach) each owns three of the six fiber pairs respectively.

The North Asian Loop cable system was jointly built by FLAG Telecom and Level 3 Communication.

Level 3 Communications built its eastern leg connecting Hong Kong, Taiwan and Japan and put it into service in July 2001. In the end of 2001, Reach acquired the North Asian Loop and other assets from Level 3 Communications. In March 2011, PCCW Global announced the completion of Reach's joint-venture alignment to take over most part of Reach's assets including the RNAL.

FLAG Telecom built the western leg connecting Hong Kong, Korea and Japan. And Reliance acquired FLAG Telecom in 2003.

In August 2011, Reliance Globalcom successfully upgraded it FNAL to 40G submarine network, to introduce 10G LAN PHY and OTN services in the FNAL submarine cable network. 

PCCW Global announced in January 2012 to upgrade the RNAL with 100G network solutions.

For more information about the FNAL/RNAL cable system, please click here