ISO 10537:2016 defines the Encapsulation Service in terms of:
a) the service primitives provided to the users of this service,
b) the protocol data units employed by the service provider, and
c) the procedures performed by the service provider.
It does not specify:
a) individual implementations or products,
b) the implementation of service interfaces within real systems,
c) the methods or technologies required to perform the procedures, or
d) the management activities required to configure and control the service.