, an interface standard
is a standard
that describes one or more functional characteristics (such as code conversion
assignments, or protocol
compliance) or physical characteristics (such as electrical, mechanical, or optical characteristics) necessary to allow the exchange of information
between two or more (usually different) systems or equipment.
Note 1: An interface standard may include operational characteristics and acceptable levels of performance.
Note 2: In the military community, interface standards permit command and control functions to be performed using communication and computer systems.
Source: from Federal Standard 1037C
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