ISO 21806-2:2020

Road vehicles — Media Oriented Systems Transport (MOST) — Part 2: Application layer ISO 21806-2:2020

Publication date:   Sep 18, 2020

General information

90.93   Standard confirmed   Feb 3, 2026

ISO

ISO/TC 22/SC 31 Data communication

International Standard

43.040.15   Car informatics. On board computer systems

Buying

Published

Language in which you want to receive the document.

Scope

This document specifies a part of the application, the application layer, and the presentation layer.
The application covers the
— device model,
— registry management,
— connection management for streaming data,
— diagnosis, and
— error handling.
The application layer covers the structure of MOST messages consisting of
— addressing,
— function block identifiers,
— instance identifiers,
— function identifiers,
— operation types, and
— timing definitions.
The presentation layer covers the definition of data, basic data types and function classes.

Life cycle

NOW

PUBLISHED
ISO 21806-2:2020
90.93 Standard confirmed
Feb 3, 2026




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