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The PSTN or Public Switch Telephone Network is part of the world's circuit-switched telephone networks that are operated by national, regional, or public telephone operators. It provides services and infrastructure for public communication. The PSTN is made up of telephone lines, microwave transmisson lines, fiber optic cables, telephone cables undersea, and communication satellites.
PSTN - Public Switched Telephone Network
The PSTN, or public switched telephone network, refers to the system of exchanges that allows for telephone communication across the world, whether you're using a mobile phone in your car or a fixed phone in your office. This includes phone lines, fiber optic cable, satellites, cell towers and more.
While this system was originally analog, it is now almost entirely digital.
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