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详细说明: Telecommunications information conveyed in a transport network is a signal with a technology-dependent format, and, optionally, a specific transmission rate (bandwidth), which is transmitted or received on network connections or in a connectionless way. ITU-T Re c. G.805 (Generic Functional Architecture of Transport Networks) considers each specific signal to be bound to a connection-oriented transmission layer and introduces the term characteristic information (CI) for the signal. It decomposes the transport network into a number of single layer networks with a client/server association between adjacent layer networks. A single layer network describes the generation, transport, and termination of a particular characteristic information. ITU-T Rec. G.852.2 (Enterprise Viewpoint Description of Transport Network Resource Model, March 1999) defines corresponding enterprise-wide network resource concepts that are management abstractions of G.805 transport network architectural components. ...展开收缩
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