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IEEE Standard for Information processing systems -- Local area networks --Part 4: Standard for Token-Passing Bus Access Method and Physical Layer Specifications
New IEEE Standard - Inactive-Withdrawn.
This local area network (LAN) standard deals with all elements of the token-passing bus access method and its associated physical signaling and media technologies.
To facilitate interconnection of stations by way of a LAN using the token-passing bus access method, this standard specifies the characteristics of the transmission medium; the signaling method used; the frame formats transmitted; the actions of a station upon receipt of a frame; the services provided at the conceptual interface between the Medium Access Control (MAC) sublayer and the Logical Link Control (LLC) sublayer; and the actions, entities and values used by management.
There are four medium characteristics and signaling methods:
For the purpose of compatible interconnection of stations by way of a LAN using the token-passing bus access method this standard:
Within this standard the operation of a station is specified in terms of the layered model shown in Fig 1-1 and described in ISO 7498 : 1984 [13]. Additional information on the 802 family of LAN standards can be found in IEEE Std 802-1990 [9].
Figure 1-1 also shows which sections of the standard specify interfaces between layers and which sections specify the operation of the layers themselves.
Recommendations for frequency allocations for community antenna television (CATV) systems are subjects for national standardization and are outside the scope of this International Standard.
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