The SSDP: Networked Home Entertainment Devices (NHED) Extensions are a set of extensions to the Simple Service Discovery Protocol (SSDP), as specified in [UPNPARCH1], and are used to detect devices on a home network. In this specification, the SSDP: Networked Home Entertainment Devices (NHED) Extensions are referred to as SSDPE.
Sections 1.8, 2, and 3 of this specification are normative and can contain the terms MAY, SHOULD, MUST, MUST NOT, and SHOULD NOT as defined in [RFC2119]. Sections 1.5 and 1.9 are also normative but do not contain those terms. All other sections and examples in this specification are informative.