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  2. Public switched telephone network - Wikipedia

    en.wikipedia.org/wiki/Public_switched_telephone...

    The architecture of the PSTN evolved over time to support an increasing number of subscribers, call volume, destinations, features, and technologies. The principles developed in North America and in Europe were adopted by other nations, with adaptations for local markets.

  3. PSTN network topology - Wikipedia

    en.wikipedia.org/wiki/PSTN_network_topology

    PSTN network topology is the switching network topology of a telephone network connected to the public switched telephone network (PSTN).. In the United States and Canada, the Bell System network topology was the switching system hierarchy implemented and operated from c. 1930 to the 1980s for the purpose of integrating the diverse array of local telephone companies and telephone numbering ...

  4. Class-5 telephone switch - Wikipedia

    en.wikipedia.org/wiki/Class-5_telephone_switch

    A Class-5 telephone switch is a telephone exchange in the public switched telephone network (PSTN) that directly serves subscribers and manages subscriber calling features. . Class-5 services include basic dial-tone, calling features, and additional digital and data services to subscribers connected to a local l

  5. Signalling System No. 7 - Wikipedia

    en.wikipedia.org/wiki/Signalling_System_No._7

    Signalling System No. 7 (SS7) is a set of telephony signaling protocols developed in the 1970s that is used to setup and teardown telephone calls on most parts of the global public switched telephone network (PSTN).

  6. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    A telephone exchange, telephone switch, or central office is a central component of a telecommunications system in the public switched telephone network (PSTN) or in large enterprises. It facilitates the establishment of communication circuits, enabling telephone calls between subscribers.

  7. Media gateway control protocol architecture - Wikipedia

    en.wikipedia.org/wiki/Media_Gateway_Control...

    The media gateway control protocol architecture is a methodology of providing telecommunication services using decomposed multimedia gateways for transmitting telephone calls between an Internet Protocol network and traditional analog facilities of the public switched telephone network (PSTN). [1] The architecture was originally defined in RFC ...

  8. Network switching subsystem - Wikipedia

    en.wikipedia.org/wiki/Network_switching_subsystem

    It is owned and deployed by mobile phone operators and allows mobile devices to communicate with each other and telephones in the wider public switched telephone network (PSTN). The architecture contains specific features and functions which are needed because the phones are not fixed in one location.

  9. Telephone network - Wikipedia

    en.wikipedia.org/wiki/Telephone_network

    This is known as the public switched telephone network or PSTN. A wireless network where the telephones are mobile and can move around anywhere within the coverage area. A private network where a closed group of telephones are connected primarily to each other and use a gateway to reach the outside world.