China-US CN was early retired in Dec. 2016.

China-US CN (China-US Cable Network or CUCN) is the first submarine cable system with direct cable routes linking the U.S. and China, reaching several countries in the Asia-Pacific region. This trans-pacific subsea optical fiber cable system was planned in 1997 and put into service in early 2000, constructed by a consortium including AT&T, China Telecom, NTT, KT, CHT etc.. China-US CN subsea cable consists of four optical fiber pairs in its northern trans-pacific trunk between Chongming cable landing station and Bandon cable landing station, and southern trans-pacific trunk between Shantou cable landing station and San Lius Obispo cable landing station, as well as the western and eastern trunks linking Shantou- Chongming, and Bandon-San Lius Obispo respectively, with branches to Japan, Korea, Taiwan and Guam. China-US CN was designed with 8x2.488 Gbps (STM-16) SDH over DWDM, a total of 80 Gbps trans-pacific system capacity with SDH self-healing ring protection. China-US CN was the largest trans-pacific subsea cable system as of its commencement of service.