ISO/IEC 17309:2000

Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Mapping functions for the employment of a circuit mode basic service and the supplementary service user-to-user signalling as a pair of on-demand inter-PINX connections

This International Standard specifies the mapping functions for a pair of on-demand inter-PINX connections using a circuit mode basic service and the supplementary service User-to-User Signalling (service 3) of a public ISDN at the same time. In order to connect a Private Integrated Services Network Exchange (PINX) to another PINX, mapping functions are required to adapt the specific interfaces at the C reference point to the application at the Q reference point. As such, mapping functions provide for physical adaptation to the interface at the C reference point. Mapping functions also provide for the mapping of user channels and signalling information at the Q reference point to the appropriate channels or timeslots at the C reference point. The C and Q reference points are defined in ISO/IEC 11579-1. At the Q reference point the mappings provide a 64 kbit/s service for user channels and a packet mode service for the signalling channel. Bearer conditioning is outside the scope of this International Standard, except for providing the layer 2 for the signalling channel at the Q reference point. Scenario management is outside the scope of this International Standard. This International Standard is applicable to PINXs which can be interconnected to form a Private Integrated Services Network (PISN) and which support signalling protocols at the Q reference point.

Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseau privé avec intégration de services — Fonctions d'application pour l'emploi d'un service de base en mode circuit et de la signalisation utilisateur/utilisateur du service supplémentaire en tant que paire de connexions entre PINX sur demande

General Information

• Status: Published
• Publication Date: 04-Oct-2000
• 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: 02-Sep-2027

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 17309
First edition
2000-09-15
Information technology —
Telecommunications and information
exchange between systems — Private
Integrated Services Network — Mapping
functions for the employment of a circuit
mode basic service and the
supplementary service user-to-user
signalling as a pair of on-demand
inter-PINX connections
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Réseau privé avec intégration de
services — Fonctions d'application pour l'emploi d'un service de base
en mode circuit et de la signalisation utilisateur/utilisateur du service
supplémentaire en tant que paire de connexions entre PINX sur
demande
Reference number
ISO/IEC 17309:2000(E)
©
ISO/IEC 2000

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ISO/IEC 17309:2000(E)
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ii © ISO/IEC 2000 – All rights reserved

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ISO/IEC 17309:2000(E)
Contents
Foreword.iv
Introduction .v
1 Scope.1
2 Conformance .1
3 Normative references .1
4 Definitions.2
4.1 External definitions .2
4.2 Special definitions .2
4.2.1 Calling PINX.2
4.2.2 Called PINX .2
4.2.3 Channel .2
4.2.4 Inter-PINX Connection .2
4.2.5 Inter-PINX Link .2
5 List of acronyms.2
6 Introduction .3
7 Capabilities at the Q reference point .3
8 Mapping functions.3
8.1 Physical adaptation.4
8.1.1 ISDN primary rate user-network Layer 1 interface (1544 kbit/s) .4
8.1.2 ISDN primary rate user-network Layer 1 interface (2048 kbit/s) .4
8.1.3 ISDN basic user-network Layer 1 interface .4
8.2 Mapping matrix .5
8.2.1 Channel allocation.5
8.2.2 Bearer conditioning for the D -channel .5
Q
9 IPC control functions.5
9.1 IPC establishment.5
9.2 IPC clearing.6
10 IPL control functions.6
10.1 Static pre-conditions for IPL establishment .6
10.2 IPL establishment.6
10.3 Transfer of inter-PINX signalling Layer 2 information.6
10.4 Use of message segmentation.6
Annex A Implementation Conformance Statement (ICS) Proforma.7
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ISO/IEC 17309:2000(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.
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 17309 was prepared by ECMA (as ECMA-244) 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.
Annex A forms a normative part of this International Standard.
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ISO/IEC 17309:2000(E)
Introduction
This International Standard is one of a series of standards defining mapping functions in exchanges of Private Integrated
Services Networks required for the utilization of intervening network scenarios. The series uses the ISDN concepts as
developed by ITU-T (formerly CCITT) and is also within the framework of standards for open systems interconnection as
defined by ISO/IEC.
This International Standard specifies mapping functions for the type of scenarios where two PINXs are interconnected via on-
demand connections via the public ISDN using the supplementary service User-to-User Signalling for carrying signalling
information.
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 JTC 1, ITU-T, ETSI and other international and national standardization
bodies. It represents a pragmatic and widely based consensus.
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INTERNATIONAL STANDARD ISO/IEC 17309:2000(E)
Information technology - Telecommunications and information exchange between
systems - Private Integrated Services Network - Mapping functions for the
employment of a circuit mode basic service and the supplementary service
user-to-user signalling as a pair of on-demand inter-PINX connections
1Scope
This International Standard specifies the mapping functions for a pair of on-demand inter-PINX connections using a circuit
mode basic service and the supplementary service User-to-User Signalling (service 3) of a public ISDN at the same time.
In order to connect a Private Integrated Services Network Exchange (PINX) to another PINX, mapping functions are required
to adapt the specific interfaces at the C reference point to the application at the Q reference point. As such, mapping functions
provide for physical adaptation to the interface at the C reference point. Mapping functions also provide for the mapping of
user channels and signalling information at the Q reference point to the appropriate channels or timeslots at the C reference
point.
The C and Q reference points are defined in ISO/IEC 11579-1.
At the Q reference point the mappings provide a 64 kbit/s service for user channels and a packet mode service for the
signalling channel. Bearer conditioning is outside the scope of this International Standard, except for providing the layer 2 for
the signalling channel at the Q reference point.
Scenario management is outside the scope of this International Standard.
This International Standard is applicable to PINXs which can be interconnected to form a Private Integrated Services Network
(PISN) and which support signalling protocols at the Q reference point.
2 Conformance
In order to conform to this International Standard, a PINX shall satisfy the requirements identified in the Implementation
Conformance Statement (ICS) proforma in annex A.
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 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).
ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs.
IUT-T Rec. I.210:1993, Principles of telecommunication services supported by an ISDN and the means to describe them.
ITU-T Rec. I.411:1993, ISDN user-network interfaces — Reference configurations.
ITU-T Rec. I.430:1995, Basic user-network interface — Layer 1 specification.
ITU-T Rec. I.431:1993, Primary rate user-network interface — Layer 1 specification.
ITU-T Rec. Q.920:1993, Digital Subscriber Signalling System No. 1 (DSS1) — ISDN user-network interface data link layer —
General aspects.
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ISO/IEC 17309:2000(E)
ITU-T Rec. Q.920 Am. 1:2000, Amendment 1 to ITU-T Recommendation Q.920.
ITU-T Rec. Q.921:1997, ISDN user-network interface — Data link layer specification.
ITU-T Rec. Q.921 Am. 1:2000, Amendment 1 to ITU-T Recommendation Q.921.
ITU-T Rec. Q.931:1998, ISDN user-network interface layer 3 specification for basic call control.
ITU-T Rec. Q.957.1:1996, Stage 3 description for additional information transfer supplementary services using DSS 1: User-
to-User Signalling (UUS).
ETS 300 415:1994, Private Telecommunication Network (PTN); Terms and definitions.
4 Definitions
4.1 External definitions
For the purposes of this International Standard, the following definitions apply.
– Basic Service (CCITT Rec. I.210)
– Call, Basic Call (ISO/IEC 11582)
– Integrated Services Digital Network (CCITT Rec. I.112)
– Private Integrated Services Network (ISO/IEC 11579-1)
– Private Integrated Services Network Exchange (ISO/IEC 11579-1)
– Public ISDN (ETS 300 415)
– Signalling (CCITT Rec. I.112)
– Supplementary Service (ISO/IEC 11582)
4.2 Special definitions
4.2.1 Calling PINX : The PINX which is at the originating interface of the public ISDN (IVN).
4.2.2 Called PINX : The PINX which is at the destination interface of the public ISDN (IVN).
4.2.3 Channel : A means of bi-directional transmission of user or signalling information between two points.
4.2.3.1 D -Channel : A channel used to convey call control information between the Q reference points of two peer PINXs.
Q
4.2.3.2 U -Channel : A channel used to convey user information between the Q reference points of two PINXs.
Q
4.2.4 Inter-PINX Connection : A connection provided by an IVN between two C reference points used to transport inter-
PINX information from the PISN control plane and/or the PISN user plane.
4.2.5 Inter-PINX Link : A link between the Q reference points of two PINXs, comprising the totality of signalling transfer
and user information transfer means.
5 List of acronyms
DSS1 Digital Subscriber Signalling System No. one
ICS Implementation Conformance Statement
IPC Inter-PINX Connection
IPL Inter-PINX Link
ISDN Integrated Services Digital Network
IVN Intervening Network
PISN Private Integrated Services Network
PINX Private Integrated Services Network Exchange
UUS3 User-to-User Signalling service 3
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ISO/IEC 17309:2000(E)
6 Introduction
The inter-PINX connection scenario using circuit mode basic services and the supplementary service User-to-User Signalling
service 3 as defined for public ISDNs is an on-demand connection scenario.
This scenario creates an IPL from the connections established as a result of an ISDN call. The ISDN call is established by
specifying the supplementary service UUS3. The signalling connection associated with the ISDN call in conjunction with the
UUS3 information transfer capability is used to provide the inter-PINX signalling connection. The circuit mode ISDN
connection is used to provide the inter-PINX user connection.
This scenario also includes procedures for sequence control and end-to-end flow control.
Connections of this scenario can be established and released at any time under the control of either PINX. In case of failure,
the public ISDN may reject a call establishment request or release an already established call. In case of congestion, the
sending PINX may inhibit temporarily the sending of USER INFORMATION signalling messages by means of an internal
congestion mechanism.
Subject to implementation in the public ISDN, this scenario provides for the use of:
– up to 2 pairs of signalling and user information connections per ISDN basic access; and,
– up to 23 (1544 kbit/s primary rate) or 30 (2048 kbit/s primary rate) pairs of signalling and user information connections per
ISDN primary rate access.
Multiple pairs of IPCs may exist at
...