ISO/IEC 17877:2000 情報技術—システム間の電気通信と情報交換—プライベート統合サービスネットワーク—仕様、機能モデル、および情報フロー—プライベートユーザーモビリティ（PUM）—追加のネットワーク機能を処理する通話 | ページ 2

4.1 外部定義

この国際規格では、他の文書で定義されている次の用語を使用しています。

この国際規格は、ISO/IEC 11574 で定義されている次の基本呼び出し機能エンティティ (FE) を参照しています。

• コール制御 (CC)
• コール コントロール エージェント（CCA）

この国際規格は、ISO/IEC 11574 で定義されている次の基本的なコール間の FE 関係を参照しています。

• rl
• r2
• r3

この国際規格は、ISO/IEC 11574 で定義されている次の基本的な呼情報フローを参照しています。

• SETUP 要求/指示
• SETUP 応答/確認
• RELEASE 要求/指示

この国際規格は、ISO/IEC 11574 で基本的な呼制御のために定義された次のサービス要素を参照しています。

• 通話履歴
• 接続タイプ
• 宛先番号
• 宛先サブアドレス
• 発信番号
• 発信サブアドレス

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, 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.

Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

International Standard ISO/IEC 17877 was prepared by ECMA (as ECMA-283) and was adopted, under a special"fast-track procedure", by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC.

Introduction

This International Standard is one of a series of standards defining services and signalling procedures 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 International Standard specifies the Private User Mobility Incoming Call (PUMI) and the Private User Mobility Outgoing Call (PUMO) additional network features.

This International Standard is based upon the practical experience of ECMA member companies and the results of their active and continuous participation in the work of ISO/IEC JTC1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consensus.

There is currently no equivalent service specified by ITU-T or ETSI for public ISDN.

1 Scope

This International Standard specifies the Additional Network Features (ANF) Private User Mobility Incoming Call (PUMI) and Private User Mobility Outgoing Call (PUMO), which are applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574.

ANF-PUMI is an additional network feature that directs incoming calls to a PUM user within a PISN regardless of the PUM user's geographical location within the PISN, provided the PUM user's location is known.

ANF-PUMO is an additional network feature that permits the PISN to process call requests from a PUM user at the home location, if required.

Additional network feature specifications are produced in three stages, according to the method described in ETS 300 387. This International Standard contains the stage 1 and stage 2 specifications of ANF-PUMI and ANF-PUMO. The stage 1 specification (clauses 6 and 7) specifies the general feature principles and capabilities. The stage 2 specification (clauses 8 and 9) identifies the Functional Entities involved in the additional network features and the information flows between them.

3 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.

4 Definitions

For the purposes of this International Standard the following definitions apply.