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Get info about the Encyclopedia of Networking and Telecommunicatons, 3rd edition (2001)
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VTAM (Virtual Telecommunications Access Method Related Entries Web Links New/Updated Information Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM. An IBM SNA legacy system includes a mainframe and the software running on that mainframe. The software at the heart of this SNA system is VTAM. IBM mainframes are host-centric processing systems, meaning that the mainframe controls all software and resources. Terminals are attached to the mainframe. In the SNA hierarchy, the mainframe running VTAM is called the Physical Unit type 5, or PU5. Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.
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