The Asia Pacific Cable Network 2 (APCN-2) is a 19,000-km optical fiber submarine cable system linking Japan, Korea, China, Taiwan, Hong Kong, Philippines, Malaysia, and Singapore in a ring configuration, with four fiber pairs connecting 10 submarine cable landing stations in Asia region.

The APCN-2 is the first submarine cable system that has a self-healing function in the Asia Region, and is capable of restoring itself instantly with its ring configuration when a failure occurs in a part of the system.

The APCN-2 has a design capacity of 2.56 Tbps by operating with 64x10 Gbps DWDM technology.