IEC 62457:2007 pdfダウンロード。Multimedia home networks – Home network communication protocol over IP for multimedia household appliances 1 Scope This International Standard specifies the requirements for the interface between the Home Network Lower Layer for a country’s home network of standalone-type household appliances and the TCP/IP Layer for cases where it is intended to introduce a TCP/IP Layer to each of the nodes comprising such home network of standalone-type household appliances. The specified interface in the Home Network Lower Layer consists of 2 portions, the TCP/IP Interface and the lower medium-specific Interface. Figure 3 shows the composition of the Home Network...