ISO 18442:2016 defines extensions to the SLE API in terms of:
a) the RAF-specific functionality provided by API components,
b) the RAF-specific interfaces provided by API components, and
c) the externally visible behavior associated with the RAF interfaces exported by the components.
It does not specify
a) individual implementations or products,
b) the internal design of the components, and
c) the technology used for communications.
ISO 18442:2016 defines only interfaces and behavior that must be provided by implementations supporting the Return All Frames service in addition to the specification in reference [3].