Page 620 - 2015 Security in Telecommunications and Information Technology

5 Unleashing the potential of the Internet of Things

3.1.2 forward identifier resolution [ITU-T Y.2213]: A function to resolve an identifier into an
associated information.
3.1.3 ID tag [ITU-T Y.2213]: A physical object which stores one or more identifiers and
optionally application data such as name, title, price, address, etc.
NOTE – It may have a communication capability with an ID terminal depending on implementations.

3.1.4 ID terminal [ITU-T Y.2213]: A device with a data reading and optional writing capability
which reads (and optionally writes) identifier(s) and optionally application data from/into an ID tag.

NOTE – The data reading (and optionally writing) capability depends on implementations.
3.1.5 identifier resolution [ITU-T Y.2213]: A function to resolve an identifier into associated
information (see "Forward identifier resolution") and vice versa (see "Reverse identifier
resolution").

3.1.6 reference point [ITU-T Y.2012]: A conceptual point at the conjunction of two
non-overlapping functional entities that can be used to identify the type of information passing
between these functional entities.

NOTE – A reference point may or may not correspond to one or more physical interfaces between pieces of
equipment.
3.1.7 reverse identifier resolution (or backward identifier resolution) [ITU-T Y.2213]:
A function to resolve an associated information into a corresponding identifier. It is the reverse
operation of the forward identifier resolution.
3.1.8 tag-based identification [ITU-T Y.2213]: The process of specifically identifying a
physical or logical object from other physical or logical objects by using identifiers stored on an ID
tag.

3.2 Terms defined in this Recommendation
This Recommendation defines the following terms:

3.2.1 functional architecture: A set of functional entities used to describe the structure of an
NGN. These functional entities are separated by reference points, and thus, they define the
distribution of functions. The functional entities can be used to describe a set of reference
configurations. These reference configurations identify which reference points are visible at the
boundaries of equipment implementations and between administrative domains.
3.2.2 functional entity: An entity that comprises a specific set of functions at a given location.
Functional entities are logical concepts, while groupings of functional entities are used to describe
practical and physical implementations.
3.2.3 identifier: An identifier is a series of digits, characters and symbols or any other form of
data used to identify subscriber(s), user(s), network element(s), function(s), network entity(ies)
providing services/applications, or other entities (e.g., physical or logical objects). Identifiers can be
used for registration or authorization.

NOTE – Identifier can be either public to all networks, shared between a limited number of networks or
private to a specific network (private identifiers are normally not disclosed to third parties).

4 Abbreviations and acronyms

This Recommendation uses the following abbreviations:
ABG-FE Access Border Gateway Functional Entity
AN-FE Access Node Functional Entity

ANI Application Network Interface

606 Rec. ITU-T Y4406/Y.2016 (08/2009)