Palawan-Iloilo Cable System

Overview

The Palawan-Iloilo Cable System is a domestic submarine cable operating entirely within the Philippines. Spanning approximately 300 kilometers, it links the islands of Palawan and Panay, enhancing regional connectivity. The cable has two landing points: Taytay in Palawan and San Jose de Buenavista in Antique province, located on Panay Island. It was commissioned in 2014 and is owned by PLDT, one of the Philippines' largest telecommunications providers. This system is a critical part of the country's infrastructure, addressing the challenges of connecting a nation composed of over 7,000 islands.

Designed to strengthen telecommunications and internet services, the Palawan-Iloilo Cable System plays a vital role in bridging digital divides between regions. It supports broadband access, enterprise connectivity, and the growing demand for reliable digital communication in the Philippines. By linking Palawan, a major island in the western Philippines, with Panay in the central region, the cable contributes to the economic and social integration of these areas.

Route and Landings

The cable route traverses the Sulu Sea, a body of water that separates the islands of Palawan and Panay. This route was chosen to connect two strategic locations: Taytay and San Jose de Buenavista. Taytay, situated in northeastern Palawan, is a municipality known for its historical significance and growing tourism sector. Its selection as a landing point underscores the importance of extending connectivity to Palawan, which has historically faced challenges in accessing robust telecommunications infrastructure.

On Panay Island, the cable lands in San Jose de Buenavista, the capital of Antique province. This municipality serves as a regional hub for commerce and governance. By linking these two points, the cable system not only facilitates communication between Palawan and Panay but also integrates these regions more closely with the broader Philippine telecommunications network. The route's design reflects the geographical and economic priorities of connecting islands separated by significant marine distances.

Ownership and History

The Palawan-Iloilo Cable System is owned and operated by PLDT (Philippine Long Distance Telephone Company), a telecommunications giant in the Philippines. Established in 1928, PLDT has played a pivotal role in the development of the country's telecommunication infrastructure. The company has a long history of deploying both domestic and international submarine cables to enhance connectivity across the archipelago and beyond.

The cable system was declared Ready for Service (RFS) in 2014, marking its integration into the national network. It was developed as part of PLDT's broader strategy to expand its domestic fiber-optic footprint, ensuring that even geographically isolated areas like Palawan could benefit from high-speed internet and reliable communication services. The cable complements other domestic systems, forming a web of connectivity that supports the Philippines' digital economy.

What Our Measurements Show

Our live monitoring of the Palawan-Iloilo Cable System has identified three primary measurement corridors. The best round-trip time (RTT) recorded across the system is 221 milliseconds, while the average RTT is 257 milliseconds. These figures provide insights into the cable's latency performance, which is crucial for applications requiring real-time data transmission, such as video conferencing and online gaming.

The latency measurements reflect the cable's operational efficiency within the context of its geographical span and technical specifications. While the RTT values are higher compared to some international systems, they are consistent with the performance expected of regional cables serving island nations like the Philippines. The data underscores the importance of maintaining and optimizing such systems to meet the growing demand for digital services in the region.