Untitled DocumentISO/IEC 14543-4-1:2008(E) specifies the services and protocol of the application layer for usage in Home Electronic Systems (HES). It provides the services and the interface to the user process. Some services are targeted to field level communication between devices. Other services are exclusively reserved for management purposes. Some services can be used for both management and run-time communication. This International Standard is based on ECHONET.