04 · Backbone
Infrastructure
Four layers, each independently redundant. The network is designed so that any single facility, cable system or signalling core can be lost without a call being dropped, and so that every route in service can be explained with evidence rather than assurances.
- Switching Layer
- Redundant session border controllers and softswitch clusters in geographically separated Hong Kong facilities, each sized to carry the full production load alone. Maintenance is performed on a drained node, never on live traffic.
- Transport Layer
- Protected capacity on multiple subsea systems with terrestrial diversity behind every landing. Corridors are engineered so that no single cable, conduit or landing station is a shared point of failure.
- Control Layer
- A routing policy engine that scores each route against cost, quality and stability, applies customer-selected postures per prefix, and demotes degrading routes automatically before human intervention is required.
- Assurance Layer
- Continuous test-call generation into priority destinations, real-time fraud and loop detection, and CDR-level reconciliation that closes the gap between what was carried and what is billed.