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Who is Solomon Islands Submarine Cable Company (SISCC)?
Solomon Islands Submarine Cable Company (SISCC) is a telecommunications infrastructure company that develops, owns, and operates subsea and related network connectivity for the Solomon Islands and regional partners.
- Design, ownership, and operation of subsea fiber optic cable systems for international connectivity (telecommunications infrastructure).
- Wholesale bandwidth and capacity services to domestic telecommunications operators, ISPs, and institutional customers (connectivity services).
- Domestic backhaul and network interconnection within the Solomon Islands to extend subsea capacity inland (network transport).
- Partnerships and consortium participation with regional carriers and governments for shared submarine cable projects (infrastructure collaboration).
- Support for digital services, enterprise connectivity, and public sector communications across Solomon Islands and connected regions (enterprise and government connectivity).
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Solomon Islands Submarine Cable Company (SISCC) operates as a telecommunications infrastructure provider focused on submarine fiber optic cables and associated terrestrial connectivity linking the Solomon Islands with regional and global networks. Its role is to provision international and domestic bandwidth at the wholesale layer, supplying capacity to licensed telecommunications operators, Internet Service Providers (ISP), enterprises, and public sector agencies that build services on top of this transport layer.
The company is associated with a subsea cable system architecture that connects the Solomon Islands to neighboring countries and major regional hubs. This architecture typically includes landing stations on key islands, branching units to connect multiple landings, and integration with terrestrial backhaul networks that extend capacity from coastal landing sites to population centers and data aggregation points. The network design aligns with standard submarine cable system components such as repeatered optical fiber pairs, optical transmission equipment, and network management systems used by regional carriers.
Within enterprise and institutional environments, SISCC’s infrastructure is used indirectly through retail service providers that purchase wholesale capacity. Government ministries, financial institutions, education providers, and other large organizations rely on this upstream capacity for internet access, cloud connectivity, voice, and data services. By providing subsea transport and inter-island backhaul, SISCC contributes to network architectures that combine international long-haul, regional connectivity, and access networks delivered by retail carriers.
From a marketplace taxonomy perspective, SISCC fits into subsea cable infrastructure, wholesale connectivity, and carrier backhaul categories. It operates at Open Systems Interconnection (OSI) Layer 1 and Layer 2 transport for most services, using optical transmission, dense Wavelength Division Multiplexing (WDM) (DWDM), and Ethernet-based interfaces typical of carrier-grade networks. Services may be structured as capacity leases, wavelength services, or bandwidth packages to downstream telecommunications providers.
In comparison to terrestrial-only network providers, a subsea cable operator such as SISCC focuses on long-distance, high-capacity links between islands and regional hubs rather than direct last-mile access. Its offerings sit alongside satellite providers and other submarine cable consortia in the broader connectivity ecosystem, with customers selecting among these transport options based on latency, capacity, resilience, and route diversity. Directory classification for SISCC aligns with categories including subsea telecommunications infrastructure, wholesale bandwidth services, and regional network transport for Pacific Island states.
Our description of Solomon Islands Submarine Cable Company (SISCC). Updated February 2026.
