Aeronautical Telecommunications Network
Encyclopedia
The Aeronautical Telecommunication Network (ATN) is an internetwork architecture
Architecture
Architecture is both the process and product of planning, designing and construction. Architectural works, in the material form of buildings, are often perceived as cultural and political symbols and as works of art...

 that allows ground/ground, air/ground, and avionic data subnetworks to interoperate by adopting common interface services and protocols based on the ISO
International Organization for Standardization
The International Organization for Standardization , widely known as ISO, is an international standard-setting body composed of representatives from various national standards organizations. Founded on February 23, 1947, the organization promulgates worldwide proprietary, industrial and commercial...

 OSI
Open Systems Interconnection
Open Systems Interconnection is an effort to standardize networking that was started in 1977 by the International Organization for Standardization , along with the ITU-T.-History:...

 Reference Model.

European part of ATN used for ground/ground communications is represented by PENS
Pan-European Network Service
The Pan-European Network Service is a telecommunications network established by several European Air Navigation Service Providers with support of Eurocontrol with a view to build transport infrastructure for current and future aeronautical applications.-References:**...

.
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