Telecom Dictionary - Definitions of terms
N-Entity - Definition and Use
N-Entity - N-entity is an active element in the n -th layer of the Open Systems Interconnection--Reference Model ( OSI -RM) that (a) interacts directly with elements, i.e. , entities, of the layer immediately above or below the n -th layer, (b) is defined by a unique set of rules, i.e. , syntax, and information formats, including data and control formats, and (c) performs a defined set of functions. Note 1: The n refers to any one of the 7 layers of the OSI-RM. Note 2: In an existing layered open system, the n may refer to any given layer in the system. Note 3: Layers are conventionally numbered from the lowest, i.e., the physical layer, to the highest, so that the n + 1 layer is above the n -th layer and the n - 1 layer is below.
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