In my previous post Submarine Cable Network, Malaysia Outlook (Part V) on July 9, 2010, I’ve included a diagram of “Typical Submarine Cable System” (refer below) but unfortunately I forgot to describe the diagram. Pardon moi!

So today, I’m gonna make it up by giving the description of the diagram as follows:

Typical Submarine Cable System

Typical Submarine Cable System

Cable Landing Station

The landing station is the first point at which the submarine cable is terminated/connected to the landing country. The landing station will be used as international gateway for internet traffic by ISP.

Landing stations house terminal equipment, including lasers, multiplexers, and power supply, that takes the optical signal from the submarine cable and passes it on to a terrestrial system.

Terminal Equipment

Terminal equipment, typically housed in the equipment room and landing station room, is what is necessary to light the entire length of the cable and to provide a point of connection for the
submarine cable to the terrestrial infrastructure in the country. They include power feeding equipment (PFE), transmission equipment, Submarine Line Terminal Equipment (SLTE), SONET/SDH Interconnecting Equipment (SIE), System Supervisory Equipment (SSE), and network monitoring equipment.

Network Management System

The landing station would have a state of the art network management system which can monitor/manage the network effectively. Network Management Systems shall provide fault, configuration, performance, and security management at local, and global levels.

Buried Cable Segment

Submarine cables are typically buried as they approach shore. This helps protect submarine cables from trawlers and fishing operations from accidentally breaking the submarine cable along the shore.

Submarine Cables

Submarine cables are laid on the ocean floor and require several layers of amour to to protect the system from damage due to debris, pressure, or shifts along the ocean floor.


Repeaters are placed along the length of the submarine cable system to correct and amplify the signal carried by the system. The distance between repeaters is relative to the overall system bandwidth; higher capacity systems require repeaters to be spaced closer together.

Source: TeleGeography, Fujitsu

Follow this link to view or download the larger image of “Typical Submarine Cable System”.


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