ISO/IEC 20115:2004

INTERNATIONAL ISO/IEC
STANDARD 20115
First edition
2004-05-15
Information technology —
Telecommunications and information
exchange between systems — Private
Integrated Services Network — Use of
QSIG for Message Centre Access (MCA)
profile standard
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Réseau privé à intégration de
services — Emploi de QSIG pour une norme de profil pour accès au
centre du message (MCA)
Reference number
©
ISO/IEC 2004
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©  ISO/IEC 2004
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ii © ISO/IEC 2004 – All rights reserved

Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Conformance. 1
3 Normative references. 1
4 Terms and definitions. 3
4.1 External definitions. 3
5 Acronyms. 6
6 Specification framework. 7
6.1 General Description. 7
6.2 Scenarios. 8
7 Profiles. 9
7.1 MCA-Profile-1. 9
7.2 MCA-Profile-2. 11
7.3 MCA-Profile-3. 12
7.4 MCA-Profile-4. 14
Annex A (normative) Requirements List (RL). 16
A.1 General. 16
A.2 Relationship between RL and corresponding PICS proformas . 16
A.3 Requirement List. 17
Annex B (normative) Profile specific ICS proforma. 40
B.1 General. 40
B.2 Instruction for completing the ICS proforma . 40
B.3 ICS proforma for Profile 1 . 42
B.4 ICS proforma for Profile 2 . 44
B.5 ICS proforma for Profile 3 . 46
B.6 ICS proforma for Profile 4 . 49
Annex C (informative) Example Message Flows . 52
C.1 Example Message Flows for Profile 1. 52
C.2 Example Message Flows for Profile 2. 55
C.3 Example Message Flows for Profile 3. 57
C.4 Example Message Flows for Profile 4. 60

© ISO/IEC 2004 – All rights reserved iii

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. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. 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 document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 20115 was prepared by ECMA (as ECMA-345) 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.

iv © ISO/IEC 2004 – All rights reserved

Introduction
This International Standard is one of a series 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 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 regional standardization bodies. It represents a pragmatic and widely based consensus.

© ISO/IEC 2004 – All rights reserved v

INTERNATIONAL STANDARD ISO/IEC 20115:2004(E)

Information technology — Telecommunications and information
exchange between systems — Private Integrated Services
Network — Use of QSIG for Message Centre Access (MCA)
profile standard
1 Scope
This Profile Standard specifies the combination of base standards, together with the selection of appropriate
options and parameter values, necessary to specify how QSIG/PSS1 can be used for Message Centre
Access (MCA) procedures.
This International Standard identifies the necessary or optional employment of particular functions, procedures
and services for a
• Calling User to deposit messages for a Served User at a Message Centre,
• Served User to monitor the Served User's Mailbox for new messages,
• Served User to browse through the messages saved in the Served User's Mailbox,
• Served User to retrieve the messages saved in the Served User's Mailbox, and
• Served User to get connected to the Originator of a message or any other destination.
2 Conformance
A system conforms to this International Standard if it correctly performs all the mandatory capabilities defined
in one or more of the requirement list (RL) (Annex A) and one or more of the profile specific ICS (Annex B).
NOTE For the purpose of this International Standard capabilities marked as optional in the base standards may be
mandatory or excluded.
3 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO/IEC 9646-7:1994, Information technology — Open Systems Interconnection — Conformance testing
methodology and framework — Part 7: Implementation Conformance Statements
ISO/IEC 11571:1998, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Networks — Addressing
ISO/IEC 11572:2000, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Circuit mode bearer services — Inter-exchange signalling
procedures and protocol
© ISO/IEC 2004 – All rights reserved 1

ISO/IEC 11574:2000, 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 11582:2002, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Generic functional protocol for the support of
supplementary services — Inter-exchange signalling procedures and protocol
ISO/IEC 13865:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Specification, functional model and information flows —
Call Transfer supplementary service
ISO/IEC 13869:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call Transfer
supplementary service
ISO/IEC 13872:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Specification, functional model and information flows —
Call Diversion supplementary services
ISO/IEC 13873:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call Diversion
supplementary services
ISO/IEC 15505:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Specification, functional model and information flows —
Message Waiting Indication supplementary service
ISO/IEC 15506:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Inter-exchange signalling protocol — Message Waiting
Indication supplementary service
ISO/IEC 19459:2001, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Specification, functional model and information flows —
Single Step Call Transfer Supplementary Service
ISO/IEC 19460:2003, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Inter-exchange signalling protocol — Single Step Call
Transfer supplementary service
ISO/IEC 20113:2004, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Specification, functional model and information flows —
Make call request supplementary service
ISO/IEC 20114:2004, Information technology — Telecommunications and information exchange between
systems — Private Integrated Services Network — Inter-exchange
...