public switched telephone network



  • Its abbreviation is PSTN. The multiple interconnected telephone networks in place worldwide, which enable most any phone to dial most any other phone around the globe. POTS is the basic service a PSTN provides. Such a network may also be used for data services, such as dial-up Internet access. Also called public telephone network, public switched network (1), or switched telephone network.

Information & Library Science

  • noun
    (written as Public Switched Telephone Network)
    a form of automatic telephone exchange interconnecting worldwide.