This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

Computing: Networking Low‑importance This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ComputingWikipedia:WikiProject ComputingTemplate:WikiProject ComputingComputing articles Low This article has been rated as Low-importance on the project's importance scale. This article is supported by Networking task force (assessed as Low-importance).

A previous version of this article said that the standard has been withdrawn. This does not appear to be the case. The IEEE site with no reference to withdrawing it. It is quite possible that I've missed something, so please revert if that is the case, but also please cite a reliable source indicating that the standard has been withdrawn, not just that the WG has been disbanded. superluser_tc 2012 November 28, 10:39 (UTC)

Standards 802.4

• 802.4-1990 - Standard for Token-Passing Bus Access Method and Physical Layer Specifications Date of Publication:Oct. 15 2011; Status: Withdrawn

The 1992 and 1997 supplements also say that they've been withdrawn, though you can still find them archived on that site. I'll revert your edit. – Wbm1058 (talk) 16:50, 7 November 2013 (UTC)

Refs and IEEE numbering lead me to believe that Token Bus was developed before Token Ring. Content in the lead implies that Token Bus was intended to be an improvement on Token Ring. This may be wrong. ~Kvng (talk) 15:45, 25 January 2021 (UTC)

802.4 Token Bus and 802.5 Token Ring were developed near-simultaneously by different factions of the 802 committee (manufacturing automation interests for 802.4, IBM for 802.5). 802.4 was based on combining the bus network idea popularized by 1970s Ethernet (the pre-802.3, 3 mbit Xerox PARC version), the token passing model seen in 1970s early token ring networks (like the Cambridge Ring), and broadband instead of baseband signaling. Ehrbar (talk) 23:37, 15 June 2022 (UTC)