Cambodia Fiber Optic Cable Collapse

Recent disruptions in Cambodia's fiber optic network have partially affected international connectivity, but nationwide telecommunications services remain stable due to robust backup systems.Overview of the IncidentCambodia recently experienced localized disruptions affecting several international fiber optic cable lines, particularly those passing through the Thailand border area. While the exact cause of the collapse has not been publicly detailed, such incidents typically involve physical damage to submarine or terrestrial cables, maintenance issues, or environmental factors like storms or construction accidents. Despite the disruption, Metfone, one of Cambodia's major telecom operators, confirmed that all services—including voice, internet, mobile data, and digital platforms—remain operational thanks to pre-established backup infrastructure and alternative transmission routes via Vietnam and Laos, with a total backup capacity of up to 1.1 Tbps .Impact on TelecommunicationsThe disruption has been partially localized, meaning that while some international connectivity may have been affected, domestic services and critical communications have continued without interruption. Metfone emphasized that maintaining network stability is a priority, and the company's flexible response ensures that citizens, businesses, and institutions experience minimal impact . Other operators in Cambodia also benefit from these backup systems, which are designed to support emergency needs.Cambodia's Fiber Optic InfrastructureCambodia's fiber optic network includes both submarine and terrestrial cables:Submarine cables: The country is connected via systems such as the Malaysia-Cambodia-Thailand (MCT) and Asia-Africa Europe 1 (AAE-1) cables, as well as the upcoming Sihanoukville-Hong Kong Submarine Cable System, which is expected to be completed by mid-2025 and will be Cambodia's first state-owned submarine cable .Terrestrial cables: Cross-border fiber optic links connect Cambodia with Thailand, Laos, and Vietnam, providing redundancy in case of international cable disruptions .Operators: The main fiber optic network operators are Telecom Cambodia, Viettel Cambodia, and Cambodia Fiber Optic Cable Network (CFOCN), regulated by the Telecommunication Regulator of Cambodia (TRC), .Ongoing ImprovementsTo enhance network resilience and safety, Phnom Penh authorities have been relocating overhead fiber optic cables underground across major streets. This project, which began in early 2025, aims to reduce fire hazards, improve aesthetics, and protect cables from physical damage . Such initiatives contribute to minimizing the risk of future collapses or service interruptions.ConclusionWhile the recent fiber optic cable collapse in Cambodia caused localized disruptions, the impact on telecommunications has been mitigated by robust backup systems and alternative routing. Cambodia continues to invest in both submarine and terrestrial fiber optic infrastructure, as well as urban cable relocation projects, to ensure network stability, safety, and reliable connectivity for citizens and businesses .