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802.4b-1992 - Local Area and Metropolitan Area Networks: 802.4 Supplement: Enhancements for Physical Layer Diversity (Redundant Media Control Unit)

Description: The supplement to ISO/IEC 8802-4:1990 (ANSI/IEEE 802.4-1990) provides a recommendation for employing diversity in the physical layer of token-passing bus systems conforming to ISO/IEC 8802-4:1990 for local and metropolitan area networks.
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