Nokia today announced that it has been selected by Symphony Communication Public Company Limited (SYMPHONY) to upgrade the Malaysia-Cambodia-Thailand (MCT) subsea cable system with its industry-leading optical solutions. As part of the initiative, legacy equipment will be replaced with Nokia’s Submarine Line Terminal Equipment (SLTE), powered by its sixth-generation Photonic Service Engines (PSE-6) coherent optics.
Once completed, the initiative will enable up to 30 Tbps of capacity per fiber pair, three times that of legacy systems, and will deliver low-latency connectivity between Thailand, Malaysia and Singapore. This will support advanced, real-time use cases such as Artificial Intelligence (AI) inference, cloud bursting and mission-critical enterprise applications. The upgrade also supports the sustainability goals of the subsea network operators by reducing the carbon footprint through improving power efficiency.
The MCT cable is the only subsea system landing in Rayong in Thailand’s EEC, the country’s primary hub for AI-driven data center investment. Thailand is rapidly emerging as a regional digital infrastructure hub, attracting more than USD23 billion in data center investment across 36 projects, according to Thailand’s Board of Investment (BOI) data.
This growth is attracting several global hyperscalers seeking trusted, high-capacity connectivity routes. The upgraded MCT cable provides a critical, low-latency and sovereign connectivity, addressing the region’s growing demand for secure, high-performance subsea infrastructure.
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