ISO/IEC 14543-4-3:2015（E）规定了家庭电子系统（HES）1级网络增强控制设备中使用的应用层的消息结构、序列和协议。它为用户级流程提供服务和接口。该应用层协议独立于支持MAC寻址或IP寻址的较低通信层。通信顺序基于应用程序服务。

ISO/IEC 14543-4-3:2015(E) specifies the message structure, sequences and protocol of the application layer for use in network enhanced control devices of the Home Electronic System (HES) Class 1. It provides the services and the interface for the user-level process. This application layer protocol is independent of lower communications layers, which support MAC addressing or IP addressing. The communications sequence is based on the application services.