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    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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    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.
    en.wikipedia.org/wiki/Public_switched_telephone_n…
    The Public Switched Telephone Network (PSTN) constitutes the interconnected voice-centric public telephone networks worldwide. It is characterized as the conventional circuit-switched telephone network, encompassing all switched telephone networks operated by local, national, or international carriers.
    A public switched telephone network is a combination of telephone networks used worldwide, including telephone lines, fiber optic cables, switching centers, cellular networks, satellites and cable systems. A PSTN lets users make landline telephone calls to one another.
    www.techtarget.com/searchnetworking/definition/P…
    The public switched telephone network (PSTN) refers to the international telephone system that uses copper wires to carry analog voice data. It consists of a collection of individual telephones that are hardwired to a public exchange.
    www.techopedia.com/definition/5606/public-switch…
    PSTN stands for Public Switched Telephone Network—referring to the traditional telephone system used for voice-oriented communications. This network relies on a physical infrastructure—copper wires, fiber-optic cables, telephone poles, cellular networks, and satellites—to allow people all over the world to make phone calls to each other.
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    What is a public switched telephone network?A public switched telephone network is a combination of telephone networks used worldwide, including telephone lines, fiber optic cables, switching centers, cellular networks, satellites and cable systems. A PSTN lets users make landline telephone calls to one another.
    What is public switched telephone network (PSTN)?1. What is PSTN? Public Switched Telephone Network, also known as PSTN, is the public telephone network managed by the local telco and long-distance carriers. The Public Switched Telephone Network (PSTN) consists of a digital backbone of switched circuits together with the analog local loop wiring still found in many residences.
    Who invented the public switched telephone network (PSTN)?It was Alexander Graham Bell, in the U.S., with a patent. While that may read more like winning recipe to the game Clue, it’s actually what happened in 1876 with Bell’s invention of the telephone. If you’ve ever wondered what the public switched telephone network (PSTN) is and how it works, then you’ve found the post you’re looking for.
    What is PSTN network?What is PSTN? PSTN stands for Public Switched Telephone Network. It is the traditional circuit-switched telephone network, a collection of interconnected voice-oriented public telephone networks all over the world. PSTN consists of all switched telephone networks globally operated either by local, national, or international carriers.
     
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    Public switched telephone network - Wikipedia

    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 … See more

    Commercialization of the telephone began shortly after its invention, with instruments operated in pairs for private use between two locations. Users … See more

    The task of building the networks and selling services to customers fell to the network operators. The first company to be incorporated to … See more

    In most countries, the government has a regulatory agency dedicated to provisioning of PSTN services. The agency regulate … See more

    1970s
    The telecommunications industry began implementing packet-switched network data services using the X.25 protocol transported over much of the end-to-end equipment as was already in use in the PSTN.
    1980s
    The industry began planning for digital services assuming they would follow much the same pattern as voice services and conceived end-to-end circuit-switched services, known as the Broadband Integrated Services Digital Network (B-ISDN).
    end of the 20th century
    The Signalling System 7 (SS7) network controlled calls between most exchanges.
    2023
    Operators worldwide are in the process of retiring support for both last-mile analog telephony and ISDN, and transitioning voice service to Voice over IP via Internet access delivered either via DSL, cable modems or fibre-to-the-premises, eliminating the expense and complexity of running two separate technology infrastructures for PSTN and Internet access.

    Network topology
    The architecture of the PSTN evolved over time to support an increasing number of subscribers, call … See more

    In the United Kingdom, the copper POTS and ISDN-based PSTN is being retired in favour of SIP telephony, with an original completion date of December 2025, although this has … See more

     
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