scope:

The present document specifies the functional architecture of an ENI System, which is a high-level decomposition of an ENI System into its major components, along with a characterization of the externally visible behaviour (e.g. as defined by a set of reference points) of the components. This includes:

• defining the functionality and behaviour of a system that satisfy the ENI Requirements (ETSI GS ENI 002 [6]);

• defining a functional architecture, in terms of Functional Blocks, that addresses the goals specified by the ENI Use Cases (ETSI GS ENI 001 [5]);

• defining Reference Points used by the above Functional Blocks for all communication with systems and entities that are external to the ENI System;

• proposing a progression plan towards full support of the proposed ENI System and intermediary level of compliance (e.g. support of some architecture components or a subset of the Reference Points).