High Quality Content by WIKIPEDIA articles! The Pan-European Network Service (PENS) 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.[A telecommunications network is a collection of terminals, links and nodes which connect together to enable telecommunication between users of the terminals. Networks may use circuit switching or message switching. Each terminal in the network must have a unique address so messages or connections can be routed to the correct recipients. The collection of addresses in the network is called the address spac

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