In telecommunication, the term sublayer has the following meanings:
- In a layered open communications system, a specified subset of the services, functions, and protocols included in a given layer.
- In the Open Systems Interconnection--Reference Model, a subdivision of a given layer, e.g., a conceptually complete group of the services, functions, and protocols included in the given layer.
- This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C".
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