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NetworkAtlas.com Archived 2019-03-23 at the Wayback Machine — Network Atlas – Global Internet Infrastructure Atlas; SubmarineCableMap.com — simple map; Detailed interactive world map — at TeleGeography.com (2018 Version) Global Caribbean net Archived 2016-10-18 at the Wayback Machine — reference site for GCN, MCN, and SCF
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.
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A telephone network is a telecommunications network that connects telephones, which allows telephone calls between two or more parties, as well as newer features such as fax and internet. The idea was revolutionized in the 1920s, as more and more people purchased telephones and used them to communicate news, ideas, and personal information. [1]
When the first transatlantic telegraph cable was laid in 1858 by Cyrus West Field, it operated for only three weeks; a subsequent attempt in 1866 was more successful. [citation needed] On July 13, 1866 the cable laying ship Great Eastern sailed out of Valentia Island, Ireland and on July 27 landed at Heart's Content in Newfoundland, completing the first lasting connection across the Atlantic.
The devices can be separated by a few meters (e.g. via Ethernet) or nearly unlimited distances (e.g. via the interconnections of the Internet). While wireless networks are more easily deployed when total throughput is not an issue, most permanent larger computer networks utilize cables to transfer signals from one point to another.
International Networks is the name given by the International Telecommunication Union (ITU) to country calling codes +882 and +883, and serves as a catch-all for telephone services not dedicated to a single country.
SAT-3/WASC/SAFE began operations in 2001, providing the first links to Europe for West African internet users and, for South Africans, taking up service from SAT-2 which was reaching maximum capacity. SAT-2 had been brought into service in the early 1990s as a replacement for the original undersea cable SAT-1 which was constructed in the 1960s.