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DECnet Phase IV 8 layers
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Phycisal - support for Ethernet/IEEE 802.3, FDDI, Token Ring
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Data Link -support IEEE 802.2, Frame Relay, HDLC (High Level Data Link Control), LAPB (Link Accessed Procedure, Balanced; DDCMP (Digital Data Communication Message Protocol)
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Routing (-> Network) -based on DRP - DECnet Routing Protocol
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End Communication (-> Transport) - NSP (Network Service Protocol) - connection oriented protocol
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Session Control
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Network Application (-> Presentation)
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Network Management (-> Application)
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User Layer (-> Application)
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