Main Page | See live article | Alphabetical index In telecommunication, the term sublayer has the following meanings: 1. In a layered open communications system, a specified subset of the services, functions, and protocols included in a given layer. 2. 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. Source: from Federal Standard 1037C This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.