A telephone call is a connection over a telephone network The public switched telephone network is the network of the world's public circuit-switched telephone networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital in its core and includes mobile as well as fixed (plain old telephone service, POTS) telephones between the calling party The calling party is a person who (or device that) initiates a telephone call over the public switched telephone network, usually by dialing a telephone number and the called party The called party is a person who (or device that) answers a telephone call. The person who (or device that) initiates a telephone call is the calling party.
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