ISO/IEC 15428:1999

Contents
Foreword .iii
Introduction.iv
1 Scope . 1
2 Conformance . 1
3 Normative references. 1
4 Definitions. 2
4.1 External definitions. 2
4.2 Other definitions . 2
5 List of acronyms. 3
6 SS-WTLR stage 1 specification. 3
6.1 Description. 3
6.2 Procedure. 3
6.3 Interaction with other supplementary services and ANFs. 4
6.4 Interworking considerations. 6
6.5 Overall SDL. 6
7 ANF-WTINFO stage 1 specification. 6
7.1 Description. 6
7.2 Procedure. 7
7.3 Interaction with other supplementary services and ANFs. 7
7.4 Interworking considerations. 8
7.5 Overall SDL. 8
8 SS-WTLR stage 2 specification. 9
8.1 Functional model . 9
8.2 Information flows. 10
8.3 Functional entity actions . 16
8.4 Functional entity behaviour . 18
8.5 Allocation of functional entities to physical equipment. 23
8.6 Interworking considerations. 23
9 ANF-WTINFO stage 2 specification. 24
9.1 Functional model . 24
9.2 Information flows. 24
9.3 Functional entity actions . 26
9.4 Functional entity behaviour . 26
9.5 Allocation of functional entities to physical equipment. 28
9.6 Interworking considerations. 28
Annex A (informative) User identifiers . 29
©  ISO/IEC 1999
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© ISO/IEC ISO/IEC 15428:1999(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the
specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the
development of International Standards through technical committees established by the respective organization to deal with
particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft
International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the national bodies casting a vote.
International Standard ISO/IEC 15428 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems.
Annex A of this International Standard is for information only.
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Introduction
This International Standard is one of a series of International Standards defining services and signalling protocols applicable to
Private Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the
framework of International Standards for Open Systems Interconnection as defined by ISO/IEC.
This particular International Standard specifies the WTLR supplementary service.
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INTERNATIONAL STANDARD  © ISO/IEC ISO/IEC 15428:1999(E)
Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Specification, functional model
and information flows — Wireless Terminal Location Registration supplementary
service and Wireless Terminal Information Exchange additional network feature
1 Scope
This International Standard specifies the Wireless Terminal Location Registration supplementary service (SS-WTLR) and the
Wireless Terminal Information Exchange additional network feature (ANF-WTINFO), which are applicable to various basic
services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574.
The Wireless Terminal Location Registration Supplementary Service (SS-WTLR) enables a WTM user to register at, or
de-register from, the current location within the PISN. The ability to register at different locations in the PISN at different times
enables the WTM user to maintain the provided services (including the ability to make and receive calls) at different access
points. De-registration is used to inform the PISN that the WTM user is temporarily unable to make use of the provided
services (including the receipt of incoming calls).
The Information Exchange Additional Network Feature (ANF-WTINFO) allows to exchange information about a WTLR user
between the Home Data Base and the Visitor Data Base.
Supplementary service and additional network feature specifications are produced in three stages, according to the method
described in CCITT Recommendation I.130. This International Standard contains the stage 1 and stage 2 specifications of
SS-WTLR and ANF-WTINFO. The stage 1 specification (clause 6 and 7) specifies the service/feature as seen by users of
PISNs. The stage 2 specification (clause 8 and 9) identifies the functional entities involved in the service/feature and the
information flows between them.
2 Conformance
In order to conform to this International Standard, a stage 3 International Standard shall specify signalling protocols and
equipment behaviour that are capable of being used in a PISN which supports the supplementary service or additional network
feature specified in this International Standard. This means that, to claim conformance, a stage 3 International Standard is
required to be adequate for the support of those aspects of clause 6 and 7 (stage 1) and clause 0 and 9 (stage 2) which are
relevant to the interface or equipment to which the stage 3 International Standard applies.
3 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this
International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply.
However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying
the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative
document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.
ISO/IEC 11571:1994, Information technology - Telecommunications and information exchange between systems - Numbering
and sub-addressing in private integrated services networks.
ISO/IEC 11574:1994, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Circuit-mode 64 kbit/s bearer services - Service description, functional capabilities and
information flows.
ISO/IEC 11579-1:1994, Information technology - Telecommunications and information exchange between systems - Private
integrated services network - Part 1: Reference configuration for PISN Exchanges (PINX).
ISO/IEC 15432:1999, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network – Specification, functional model and information flows - Wireless Terminal Authentication
supplementary services (WTAT and WTAN).
ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs.
CCITT Rec. I.130:1988, Method for the characterization of telecommunication services supported by an ISDN and network
capabilities of an ISDN (Blue Book).
ITU-T Rec. I.210:1993, Principles of telecommunication services supported by an ISDN and the means to describe them.
ITU-T Rec. Z.100:1993, Specification and Description Language.
4 Definitions
For the purposes of this International Standard, the following definitions apply.
4.1 External definitions
This International Standard uses the following terms defined in other documents:
– Authentication (ISO/IEC 15432)
– Basic service (ITU-T Rec. I.210)
– PISN number (ISO/IEC 11571)
– Private Integrated Services Network (PISN) (ISO/IEC 11579-1)
– Private Integrated Services Network Exchange (PINX) (ISO/IEC 11579-1)
– Service (ITU-T Rec. I.112)
– Signalling (ITU-T Rec. I.112)
– Supplementary Service (ITU-T Rec. I.210)
– User (ISO/IEC 11574)
4.2 Other definitions
Additional Network Feature (ANF): A capability, over and above that of a basic service, provided by a PISN, but not
directly to a PISN user.
Directory PINX: A PINX which provides a mapping function to a WTM user's PISN number or permanent identity from
another type of identity indicating the same WTM user.
Fixed part (FP): A physical grouping of some or all of the fixed component parts of a mobile radio system. These would
include one or more radio equipments attached to an antenna system. It could also include common control functions and
interfaces to the PINX.
Home Data Base (HDB): The data base in which the current location and all associated parameters of a wireless terminal are
stored.
Home PINX: The PINX which has direct access to the HDB entry for a particular WTM user.
Location Area (LA): The coverage area in which a wireless terminal may receive and make calls as a result of a single
location registration.
Network Assigned Identity (NAI): A temporary identity assigned by the PISN to a WTM user. This identity comprises:
- a PISN number sufficient to identify the PINX assigning the NAI; and
- a local identity valid while the user is registered.
PISN authority: The body or its representative responsible for arranging the service with the service provider.
PISN user: The user of the network layer services provided by a PISN.
Service profile: The specific collection of PISN services and service opti
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