Public Switched Telephone Network

The public switched telephone network (PSTN) is the concentration of the world's public circuit-switched telephone networks, in much the same way that the Internet is the concentration of the world's public IP-based packet-switched networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital, and now includes mobile as well as fixed telephones.

Related Topics:
Circuit-switched - Telephone - Internet - IP - Packet-switched - Mobile

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The PSTN is largely governed by technical standards created by the ITU-T, and uses E.163/E.164 addresses (known more commonly as telephone numbers) for ooo addressing.

Related Topics:
ITU-T - E.163 - E.164

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