The Network Layer document describes the requirements and services for Network Interconnection ECUs (NIECU) that enable electronic control units (ECUs) on a network segment to intercommunicate with other ECUs on different network segments of the vehicle network. This document defines various types of NIECUs. The information in this document applies only to ECUs that are intended to provide networking services. It is not necessary for an ECU to provide any of these services in order to be compliant with the SAE J1939 protocol.

Customers who purchased SAE J1939-31
also purchased

• SAE J1939-71 : Vehicle Application Layer (Through May 2011)
• SAE J1939-21 : (R) Data Link Layer
• SAE J1939-73 : Application Layer - Diagnostics
• SAE J1939 : Serial Control and Communications Heavy Duty Vehicle Network - Top Level Document

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