The international Coral Sea Cable System (CS2) links Honiara in the Solomon Islands and Port Moresby in PNG to Sydney, Australia. CS2 comprises a 4 fibre pair cable from Australia through the Coral Sea to a Branching Unit that separate 4 pairs into separate 2 pair paths. From the Branching Unit each pair path extends to Honiara and Port Moresby respectively where they terminate at landing facilities and terminal equipment.
This is a powered repeated system engineered to provide a minimum of 10 Terabits/s over a single pair of fibres so each country has a potential 20 Terabit/s capacity with today’s established cable technology. Each country’s fibres are completely independent of the other right through the system and the only linkage from Port Moresby to Honiara is via the Sydney Landing Facilities.
The Solomon Islands Domestic Cable Network (SIDN) links Auki, Noro and Taro back to Honiara using unpowered cable. The long stretch from Honiara to Noro requires amplification at each end to span the distance successfully so has a maximum capacity of 12 X 100GB/s or 1.2 Terabit/s. The other spans all support 10 Terabit/s maximum capacity.
The Solomon Submarine Cable Company (SISSC) has been in commercial operation since February 01, 2020, and there are 4 wholesale operators connected to the cable.
Coral Seas Cable (CS2) - International
Solomon Islands Domestic Network (SIDN) - Domestic