The Network Interface Specification Set contains the latest core specification, version 2.5 (Dec. All ONVIF-conformant devices and clients comply with the requirements of one or more profiles, rather than declaring conformance to the current version of the core specification. Specifications evolve, get updated and have version numbers profiles, once adopted, do not change and do not have version numbers.
ONVIF maintains one core specification and a series of “profiles” - which are subsets of the main specification that denote sets of similar features and functions. REST is said to be more architecture than protocol, and it has become popular for web interface and cloud applications. a competitive technique called REST (for Representational State Transfer) used by the PSIA standardization effort. Note that UPnP (Universal Plug and Play) - a set of networking protocols for network device discovery and communications - uses HTTP, XML and SOAP. One critique of SOAP is the verbosity of its messages however, it has a defined set of specifications for security and reliable messaging, and requires its standards to be strictly followed. HTTP or HTTPS is typically used as the transport protocol. A SOAP message is an XML document which contains an envelope and message body and may contain a header and fault information. ONVIF uses a protocol called SOAP (Simple Object Access Protocol), originally designed in 1998. A key to any approach tying together disparate systems is the software means through which they interact.
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