| BLACK, U. 1996. SONET and T1, Architectures for Digital Transport Networks. Prentice Hall Press, Upper Saddle River, NJ. |
....module (OM) cell switching fabric (CSF) call admission control (CAC) and system management (SM) Note that these are just logical modules, actual partitioning of functions varies from implementation to implementation. For ease of discussion, we assume that SONET (Synchronous Optical Network) [Black 1996] is used as the physical layer. IM extracts cells from the SONET payload envelope, determines the port or module each cell is destined for, and appends an internal tag to each cell. Three types of cells are identified by IM. These are user cells that carry user traffic, signaling cells that carry ....
BLACK, U. 1996. SONET and T1, Architectures for Digital Transport Networks. Prentice Hall Press, Upper Saddle River, NJ.
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