Subsea Cables & Internet Infrastructure

This is the Peace cable's Marseille backhaul. It illustrates standard landing architecture as well as good network design. First of all, the cable comes ashore outside Marseille Port's own cable landing facilities for the sake of physical diversity and resilience. Always put some distance between a cable and others if possible. This increases the cable's value and demand for its capacity because diversity means adding it to the network portfolio improves its resilience. It is analogous to the role of diversification in a financail portfolio. Like all other subsea cables, Peace terminates in a beach manhole where it was spliced to a terrestrial fibre cable that also contains a power conductor just like the subsea cable. Then the terrestrial fiber goes to an Orange 'CLS', really just a power feed hut. From there the cable becomes part of a fully diverse fibre ring that includes dual entrances into MRS2 where most of the cable's SLTEs are kept. Most likely this fib...

1. The submarine line termination equipment, consisting of active electronics and transponders (lasers and optical receivers), was traditionally kept at the cable landing station. This began changing when carriers wanted to own and manage their own dedicated capacity (fibre pair or spectrum slice). Telekom Malaysia was an early example. It took two fibre pairs on the ASE cable as opposed to a fraction of the consortium lit capacity. Later the hyperscalers crystallized this evolution in the open cable model which limits common ownership to the wet segments. Each owner has either fibre pairs or spectrum and makes its own decisions concerning where to place the SLTEs. Because cable landing stations are not designed as large carrier neutral interconnection points, the SLTEs are almost always housed in a cage at a carrier netural data center. It is this flexibility in choice of location and equipment vendor that makes the open cable model so appealing. It also facilitates hyperscalers build...