ISO 21806-4-2020 pdf free

04-22-2021 comment

ISO 21806-4-2020 pdf free.Road vehicles — Media OrientedSystems Transport (MOST) — Transport layer and network layer.
1.This document specifies technical requirements related to the MOST’ transport layer and network layerfunctionality:
the service interface to application layer;- the network layer services;the data transport mechanism;
the dynamic behaviour of a node;- the network error management.
2.Normative references:The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies.Forundated references, the latest edition of the referenced document(including any amendments) applies.ISO 21806-1, Road vehicles — Media Oriented Systems Transport (MOST)—Part 1: General informationand definitions
3.Terms and definitions:For the purposes of this document, the terms and definitions given in ISO21806-1 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:
ISO Online browsing platform: available at
3.1active TimingSlave:TimingSlave that initiates a network startup (3.2)
3.2network startup network activity that commences so that all nodes in the MOST network change to s_NetInterfaceNormal_Operation
3.3network wake-up:process of all nodes in the MOST network exiting NetInterface sleep
IEC Electropedia: available at http:.// wake-up event:network activity or electrical wake-up line activity
3.5.passive TimingSlave:node that participates in a network startup (3.2), not initiating it.
Table 10 provides an overview of the parameters that are used in the specified service interface andused in both directions.Data is used as a wrapper for payload that requires no interpretation in the context of the serviceinterface that contains it.Session_ID is an Unsigned word parameter, which is used to unambiguously identify an instance of acontrol frame that is passed down by the application.The session ID is generated by the application andused when determining the outcome of a transmission attempt.Target Address is used to fill the target address field for 16-bit addressing for control data andpacket data.ISO 21806 pdf download.

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