What is ISO 21806‑4 about?
ISO 21806‑4 is part four of the multi-series standard that specifies technical requirements related to the MOST transport layer and network layer functionality:
- The service interface to application layer
- The network layer services
- The data transport mechanism
- The dynamic behaviour of a node
- The network error management
Who is ISO 21806‑4 for?
ISO 21806‑4 on Media Oriented Systems Transport (MOST) transport layer and network layer is useful for:
- Vehicle manufacturers
- Car infotainment manufacturers and developers
- Vehicle data services providers
- Developers of multimedia and infotainment systems
Why should you use ISO 21806‑4?
MOST enable the transport of high-quality service (QoS) audio and video together with packet data and real-time control to support modern automotive multimedia and similar applications. MOST is a function-oriented communication technology to network a variety of multimedia devices comprising one or more MOST nodes.
ISO 21806‑4 provides guidelines for network layer services, data transport mechanism, dynamic behaviour of a node, service interface to application layer network and error management.
ISO 21806‑4 shows the transport layer (TL) service interface, which specifies the interface to the upper OSI layers.
ISO 21806‑4 specifies the parameters that are used in the service interface and received from upper layers.
