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PSTN Last modified: Tuesday, September 17, 2002

Short for Public Switched Telephone Network, which refers to the international telephone system based on copper wires carrying analog voice data. This is in contrast to newer telephone networks base on digital technologies, such as ISDN and FDDI. Telephone service carried by the PSTN is often called plain old telephone service (POTS).

Internet Telephony Consortium Home page for a research organization focused on providing interoperability between the Internet and the public switched telephone network. Offers news about the group as well as publications, links and resources.