ISO/IEC 15991:2003

Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Call Priority Interruption and Call Priority Interruption Protection supplementary services

ISO/IEC 15991:2003 specifies the Supplementary Services Call Priority Interruption (SS-CPI) and Call Priority Interruption Protection (SS-CPIP), which are applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. NOTE This edition of ISO/IEC 15991 does not apply to the circuit-mode Multiple Rate Bearer Service. SS-CPI is a supplementary service that allows a call request for a priority call to proceed successfully in the case that there is no user information channel available. This is accomplished by force releasing an established call of lower priority. SS-CPIP is a supplementary service that allows for the protection of calls against interruption from other, priority, calls. SS-CPI and SS-CPIP are described separately because SS-CPI is a service used by a calling user, and SS-CPIP is a service used by either a calling user or a called user. Supplementary service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 15991:2003 contains the stage 1 and stage 2 specifications of SS-CPI. The stage 1 specification (clause 6) specifies the general feature principles and capabilities. The stage 2 specification (clause 7) identifies the Functional Entities involved in the supplementary service and the information flows between them.

Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseau privé à intégration de services — Spécification, modèle fonctionnel et flux d'informations — Services supplémentaires d'interruption de priorité d'appel et de protection d'interruption de priorité d'appel

General Information

• Status: Published
• Publication Date: 20-Mar-2003
• ICS: 33.040.35 - Telephone networks
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 9060 - Close of review
• Start Date: 04-Jun-2029

Relations

• Revises: ISO/IEC 15991:1998 - Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Call priority interruption and call priority interruption protection supplementary services
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 15991
Second edition
2003-04-01


Information technology —
Telecommunications and information
exchange between systems — Private
Integrated Services Network —
Specification, functional model and
information flows — Call Priority
Interruption and Call Priority Interruption
Protection supplementary services
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Réseau privé à intégration de
services — Spécification, modèle fonctionnel et flux d'informations —
Services supplémentaires d'interruption de priorité d'appel et de
protection d'interruption de priorité d'appel


Reference number
ISO/IEC 15991:2003(E)
©
ISO/IEC 2003

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ISO/IEC 15991:2003(E)
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ii © ISO/IEC 2003 — All rights reserved

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ISO/IEC 15991:2003(E)
Contents
Foreword vi
Introduction vii
1 Scope 1
2 Conformance 1
3 Normative references 1
4 Terms and definitions            2
4.1 External definitions 2
4.2 Additional network feature 2
4.3 Call, Basic call 2
4.4 Call Priority Interruption Capability Level (CPICL) 2
4.5 Call Priority Interruption Protection Level (CPIPL) 2
4.6 Established call 3
4.7 Impending priority interruption state 3
4.8 Impending priority interruption warning notification 3
4.9 Non-priority call 3
4.10 Priority call 3
Protected call
4.11 3
4.12 Served user 3
4.13 Time to priority interruption 3
4.14 Unprotected call 3
5 List of acronyms 3
6 SS-CPI stage 1 specification 4
6.1 Description 4
6.1.1 General description 4
Qualifications on applicability to telecommunication services
6.1.2 4
6.2 Procedure 4
6.2.1 Provision/withdrawal 4
6.2.2 Normal procedures 4
6.2.3 Exceptional procedures 6
6.3 Interaction with other supplementary services and ANFs 6
6.3.1 Calling Name Identification Presentation (SS-CNIP) 6
6.3.2 Connected Name Identification Presentation (SS-CONP) 6
6.3.3 Completion of Call to Busy Subscriber (SS-CCBS) 6
6.3.4 Completion of Call on No Reply (SS-CCNR) 6
6.3.5 Call Transfer (SS-CT) 6
6.3.6 Call Forwarding Unconditional (SS-CFU) 6
6.3.7 Call Forwarding Busy (SS-CFB) 6
6.3.8 Call Forwarding No Reply (SS-CFNR) 6
6.3.9 Call Deflection (SS-CD) 6
6.3.10 Path Replacement (ANF-PR) 6
6.3.11 Call Offer (SS-CO) 6
Call Intrusion (SS-CI)
6.3.12 6
6.3.13 Do not Disturb (SS-DND) 6
6.3.14 Do not Disturb Override (SS-DNDO) 6
6.3.15 Advice of Charge (SS-AOC) 6
© ISO/IEC 2003 – All rights reserved iii

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ISO/IEC 15991:2003(E)
6.3.16 Recall (SS-RE) 6
6.3.17 Call Interception (ANF-CINT) 7
6.3.18 Transit Counter (ANF-TC) 7
6.3.19 Interaction with Wireless Terminal Location Registration (SS-WTLR) 7
6.3.20 Interaction with Wireless Terminal Incoming Call (ANF-WTMI) 7
6.3.21 Interaction with Wireless Terminal Outgoing Call (ANF-WTMO) 7
6.3.22 Interaction with Wireless Terminal Authentication of a WTM user (SS-WTAT) 7
6.3.23 Interaction with Wireless Terminal Authentication of a PISN (SS-WTAN) 7
6.3.24 Message Waiting Indication (SS-MWI) 7
6.3.25 Common Information (ANF-CMN) 7
6.3.26 Call Priority Interruption Protection (SS-CPIP) 7
6.4 Interworking considerations 7
Overall SDL
6.5 7
7 SS-CPIP stage 1 specification 11
7.1 Description 11
7.1.1 General description 11
7.1.2 Qualifications on applicability to telecommunication services 11
7.2 Procedure 11
7.2.1 Provision/withdrawal 11
7.2.2 Normal procedures 11
Exceptional procedures
7.2.3 12
7.3 Interaction with other supplementar
...