The Japan-Guam-Australia (JGA) Cable System comprises JGA South and JGA North, interconnecting at a new cable landing station in Piti, Guam.

JGA South and JGA North are operated as separate cable systems. JGA South is supplied by Alcatel Submarine Networks (ASN), while JGA North is supplied by NEC Corporation.

JGA South (JGA-S) is a consortium cable. JGA South consortium includes AARNet, Google and RTI. Spanning approxiamately 7000km, the JGA South lands in Sydney, Sunshine Coast of Queensland and Piti in Guam, with an initial design capacity of 36 Tbps (2*180*100Gbps) on 2 fiber pairs. JGA South is the first new cable ever to land in Sunshine Coast of Queensland, on the east coast of Australia, outside of Sydney. In Guam, the JGA South lands at the Piti-I CLS, with Google as the landing party.

JGA North (JGA-N), the 2700km segment between the Minami-Boso in Japan and Piti in Guam, is a private cable with RTI as the sole operator and investor. The JGA North cable consists of two fiber pairs, with an initial design capacity of 24 Tbps (2*120*100Gpbs). The JGA-North lands at the GNC CLS and data center in Piti, Guam. The Minamiboso cable landing station for JGA North is a new cable landing station owned and controled by NTT, which is built as terminal station for NTT's Jupiter cable system. The Minamiboso cable landing station will provide additional geographical diversity for U.S.-Japan traffic currently landing at KDDI's Chikura cable landing station and SoftBank's Maruyama cable landing station.

JGA South and JGA North were ready for service in March and July 2020 respectively.