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IEEE 802.5-1989 IEEE Standard for Local Area Networks: Token Ring Access Method and Physical Layer Specifications

【国外标准】 IEEE Standard for Local Area Networks: Token Ring Access Method and Physical Layer Specifications

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IEEE 802.5-1989
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For the purpose of compatible interconnection of data processing equipment via a local area network using the token-passing ring access method, this standard (1) Defines the frame format, including delimiters, addressing, and frame check sequence, and introduces medium access control 9MAC) frames timers, and priority stacks (see Section 3); (2) Defines the MAC protocol.The finite-state machine and state tables are supplemented with a prose description of the algorithms (see Section 4); (3)… read more Defines the physical layer (PHY) functions of symbol encoding and decoding, symbol timing, and latency buffering (see Section 5) (4) Describes the services provide by the MAC to the station management (SMT) and the logical link control sublayer (LLC) and the services provided by the PHY to SMT and the MAC. These services are defined in terms of service primitives and associated parameters (see Section 6); (5) Defines the 4 and 16 Mbit/s, shielded twisted pair attachment of the station to the medium including the definition of the medium interface connector (MIC) (see Section 7). The previously specified 1 Mbit/s mode of operation is not covered by this standard. Users and implementers of 1 Mbit/s should refer to ANSI/IEEE Std 802.5-1985, under which it is allowed. read less

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IEEE 802.5-1989
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IEEE Standard for Local Area Networks: Token Ring Access Method and Physical Layer Specifications
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