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ISO-3166
An :term:`ISO` standard that defines codes to represent countries and their subdivisions. See http://www.iso.org/iso/country_codes.htm
ISP
An Internet Service Provider, i.e. a network that provides Internet access to its clients.
ITU
The International Telecommunication Union is a United Nation's agency whose purpose is to develop standards for the telecommunication industry. It was initially created to standardize the basic telephone system but expanded later towards data networks. The work within ITU is mainly done by network specialists from the telecommunication industry (operators and vendors). See https://www.itu.int for more information
IXP
Internet eXchange Point. A location where routers belonging to different domains are attached to the same Local Area Network to establish peering sessions and exchange packets. See http://www.euro-ix.net/ or https://en.wikipedia.org/wiki/List_of_Internet_exchange_points_by_size for a partial list of IXPs.
LAN
Local Area Network
leased line
A telephone line that is permanently available between two endpoints.
MAN
Metropolitan Area Network
MIME
The Multipurpose Internet Mail Extensions (MIME) defined in :rfc:`2045` are a set of extensions to the format of email messages that allow to use non-ASCII characters inside mail messages. A MIME message can be composed of several different parts each having a different format.
MIME document
A MIME document is a document, encoded by using the :term:`MIME` format.
minicomputer
A minicomputer is a multi-user system that was typically used in the 1960s/1970s to serve departments. See the corresponding Wikipedia article for additional information : https://en.wikipedia.org/wiki/Minicomputer