Undersea telephone cable in the context of "Petroleum jelly"

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⭐ Core Definition: Undersea telephone cable

A submarine communications cable is a cable laid on the seabed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables were laid beginning in the 1850s and carried telegraphy traffic, establishing the first instant telecommunications links between continents, such as the first transatlantic telegraph cable which became operational on 16 August 1858.

Submarine cables first connected all the world's continents (except Antarctica) when Java was connected to Darwin, Northern Territory, Australia, in 1871 in anticipation of the completion of the Australian Overland Telegraph Line in 1872 connecting to Adelaide, South Australia and thence to the rest of Australia.

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Undersea telephone cable in the context of Public switched telephone network

The public switched telephone network (PSTN) is the aggregate of the world's telephone networks that are operated by national, regional, or local telephony operators. It provides infrastructure and services for public telephony. The PSTN consists of telephone lines, fiber-optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables interconnected by switching centers, such as central offices, network tandems, and international gateways, which allow telephone users to communicate with each other.

Originally a network of fixed-line analog telephone systems, the PSTN is now predominantly digital in its core network and includes terrestrial cellular, satellite, and landline systems. These interconnected networks enable global communication, allowing calls to be made to and from nearly any telephone worldwide. Many of these networks are progressively transitioning to Internet Protocol to carry their telephony traffic.

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LINKED FROM (PARENTS)
← Public switched telephone network
LINKS TO (CHILDREN)
Cross section (geometry) → Polyethylene → BoPET → Wire rope → Polycarbonate → Petroleum jelly → Optical fiber → Cable layer → Orange Marine → Seabed → Telecommunication signaling → Telegraphy → Transatlantic telegraph cable → Continent → Antarctica → Java → Darwin, Northern Territory → Australian Overland Telegraph Line → Adelaide, South Australia →