ISO/IEC 11574:1994

INTERNATIONAL
STANDARD
First edition
1994-12-15
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
Technologies de I ’informa tion - T6l6communications et 6change
d ‘in forma tion en tre sys temes - Rbseau priv6 avec integration de
Services - Services porteurs sur 8 kilo-octets par seconde en mode
circuit - Description du Service, aptitudes fonctionnelles et couran ts
d ’information
Reference number
ISO/IEC 11574:1994(E)

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ISO/IEC 11574: 1994 (E)
Contents
. . .
111
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword
iv
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 1:
1 scope 1
1
........................................................................................................
2 Normative references
1
........................................................................................
International Standards
2.1
1
.....................................................................................
2.2 ITU-T Recomrnendations
2
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
4 Symbols and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
........................................................................................
5 Provision of Services by a PISN
3
5.1 Bearer Services .
3
Teleservices .
5.2
3
.........................................................................................
5.3 Control and signalling
3
.................................................................................
5.4 Interworking considerations
3
Service model .
5.5
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 2 : Service Description, (Stage 1 description)
....................
.4
6 Circuit-mode 64 kbit/s unrestricted 8 kHz structured bearer service category
4
6.1 Definition .
4
6.2 Description .
5
6.3 Procedures .
5
Network capability for charging .
6.4
5
Interworking considerations .
6.5
.... .5
6.5.1 Interworking with a public ISDN and certain other digital network
6.5.2 Interworking with networks supporting only a restricted digital
5
information transfer capability .
5
6.5.3 Interworking with analogue networks .
5
...................................................................
6.6 Static Description: Service Attributes
7 Circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for Speech
6
information transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
@ ISO/IEC 1994
All rights reserved. No part of this publication may be reproduced or utilised in any form or by any means,
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ISO/IEC Copyright Office l Case postale 56 l CH-1 211 Gen&e 20 l Switzerland
Printed in Switzerland
ii

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ISO/IEC 11574: 1994 (E)
6
...........................................................................................................
7.1 Definition
6
.........................................................................................................
7.2 Description
6
..........................................................................................................
7.3 Procedures
.......................................................................... 6
7.4 Network capability for charging
Interworking considerations . 6
7.5
7.5.1 Interworking with a public ISDN and certain other Digital Networks .6
6
7.5.2 Interworking with analogue networks .
6
7.5.3 Encoding law conversion .
6
Static Description: Service Attributes .
7.6
Circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for 3,l kHz audio
8
7
information transfer .
7
8.1 Definition .
7
8.2 Description .
7
8.3 Procedures .
7
..........................................................................
8.4 Network capability for charging
7
................................................................................
8.5 Interworking considerations
Interworking with a public ISDN and certain other Digital Networks .7
8.5.1
7
8.5.2 Interworking with analogue networks .
7
Encoding law conversion .
8.5.3
7
Static Description: Service Attributes .
8.6
............................................................... 8
Comrnon procedures for services within a PISN
9
8
Provision of services .
9.1
8
Normal procedures .
9.2
......................................... 8
9.2.1 Cal1 establishment at the calling PISN user
.......................................... 9
9.2.2 Cal1 establishment at the called PISN user
.................................................. 9
9.2.3 Termirrating the service (cal1 release)
................................................... 10
Exceptional procedures/unsuccessful outcome
9.3
10
..................................................................................................................
10 Interworking
................................................................. 10
10.1 General Interworking considerations
.................................................................................. 10
10.1.1 Incoming calls
.................................................................................. 11
10.1.2 Outgoing calls
.............................................................................. 11
10.1.3 PISN transit calls
......................................................................... 11
10.2 Interworking with public-ISDN
.................................. 11
10.2.1 Receipt of service request from a public ISDN
....................................... 12
10.2.2 Sending a service request to a public ISDN
................................ 12
10.2.3 Receipt of a Service response from public ISDN
.......................................... 12
10.2.4 Sending Service response to public ISDN
. . .
111

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ISOLEC 11574: 1994 (E)
12
11 Dynamit Description .
..................... .15
Section 3 : Functional capabilities and information flows, (Stage 2 description)
15
12 Functional model .
15
12.1 Functional model description .
15
12.2 Description of the fimctional entities .
15
12.2.1 Cal1 Control Agent fimctional entity .
.................................. 15
12.2.1.1 Originating CCA fimctional entity
12.2.1.2 Destination CCA functional entity . 16
16
Cal1 Control fimctional entity .
12.2.2
12.2.2.1 Originating CC functional entity . 16
12.2.2.2 Destination CC functional entity . 16
Transit CC functional entity . 16
12.2.2.3
Incoming and Outgoing Gateway CC fbnctional entities .17
12.2.2.4
17
.......................................................................................
13 Definition of information flows
............................ 17
13.1 Conventions used within the description of information flows
13.1.1 Convention for the description of mandatory or optional information 17
................................ 17
13.1.2 Convention for the naming of information flows
18
13.2 SETUP .
21
13.3 REPORT .
21
........................................................................
13.4 CHANNEL ACKNOWLEDGE
-
21
....................................................................................
13.5 CHANNEL-CONNECT
22
13.6 DISCONNECT .
22
RELEASE .
13.7
22
...............................................................................................
13.8 INFORMATION
22
13.9 SETUPJEJECT .
22
13.10 PROCEEDING .
23
14 Information flow sequences .
23
14.1 Functional entity actions .
23
.....................................................
14.1.1 Originating CCA functional entity
23
.......................................................
14.1.2 Originating CC functional entity
25
..............................................................
14.1.3 Transit CC functional entity
25
........................................................
14.1.4 Destination CC functional entity
26
.....................................................
14.1.5 Destination CCA fimctional entity
27
.............................................
14.1.6 Incoming gateway CC functional entity
28
.............................................
14.1.7 Outgoing gateway CC functional entity
................................................................................. 29
14.2 Normal cal1 establishment
..3 0
14.3 Normal cal1 establishment with digit-bydigit sending and automatic answer. .
iv

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ISO/IEC 11574: 1994 (E)
.................... 3 1
14.4 Unsuccessful calls with the provision of tones and announcements
............... 32
14.5 UnsuccessM calls without the provision of tones and announcements
.......................................................... 33
14.6 Incoming interworking with a non-ISDN
.......................................................... 34
14.7 Outgoing interworking with a non-ISDN
14.8 Outgoing interworking with digit-bydigit sending . 35
36
14.9 Basic cal1 Clearing .
37
14.10 Incoming interworking with a public ISDN .
38
14.11 Outgoing interworking with a public ISDN .
39
15 SDL diagrams for functional entities .
............................................. 39
15.1 Originating CCA ftmctional entity SDL diagrams
................................. 39
15.1.1 Originating CCA states used in SDL diagrams
....................................................... 39
15.1.2 Originating CCA SDL diagrams
43
...............................................
15.2 Originating CC functional entity SDL diagrams
43
Originating CC states used in SDL diagrams .
15.2.1
43
15.2.2 Originating CC SDL diagrams .
48
......................................................
15.3 Transit CC functional entity SDL diagrams
48
Transit CC states used in SDL diagrams .
15.3.1
49
Transit CC SDL diagrams .
15.3.2
52
15.4 Destination CC functional entity SDL diagrams .
.................................... 53
15.4.1 Destination CC states used in SDL diagrams
.......................................................... 53
15.4.2 Destination CC SDL diagrams
57
.............................................
15.5 Destination CCA functional entity SDL diagrams
57
..................................
15.5.1 Destination CCA states used in SDL diagram
57
.......................................................
5.5.2 Destination CCA SDL diagrams
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
16 Allocation of functional entities to physical entities
61
Service attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Annex A:
62
Annex B: Telephony Teleservice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
63
Annex C: Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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ISO/IEC 11574: 1994 (E)
Foreword
ISO (the International Organization for Standardization) and IEC (the Inter-
national 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. 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 11574 was prepared by Joint Technical
Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6,
Telecommunications and information exchange between Systems.
Annexes A and B form an integral part of this International Standard. Annex C is
for information only.
Vi

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ISO/IEC 11574: 1994 (E)
Introduction
This International Standard is one of a set of International Standards produced to facilitate the
interconnection of private telecommunication systems (such as PBXs) so as to form private
networks that are able to offer integrated services to users and which are also able to interwork
with the public ISDN.
According to the methods described in ITU-T Recommendations 1.130 and 4.65, service
specifications are produced in three Stages. This International Standard specifies the Stage 1,
Service description and Stage 2, Functional capabilities and information flows for 64 kbit/s
circuit mode bearer services.
One of the purposes of the Stage 1 and Stage 2 specifications is to guide and constrain the work
on signalling protocols at Stage 3, and therefore this International Standard is concemed mainly
with the control aspects of Services. The attributes of the user information transfer capability for
each of the services are also described. Detailed requirements of user information protocols and
switching functions are outside the scope of this International Standard.
A Stage 3 International Standard shall be in conformance with the Stage 1 and Stage 2
specifications contained in this International Standard, if the signalling protocols and
equipment behaviour specified in the Stage 3 International Standard are capable of being used in
a Private Integrated Services Network, PISN that supports any or all of the basic services
specified in this International Standard. In particular, the Stage 3 International Standards shall
be adequate for the support of
0
common aspects of the control of basic Services, as seen by the PISN User, as specified in
clauses 9 and 10,
0
the control of the individual basic Services specified in clauses 6,7, 8, and Annex A,
l the functional entities, functional entity allocations and information flows identified in
clauses 12, 13,14 and 16, and
l interworking with the public ISDN as specified in clause 10.2
The technical contents of this International Standard are organised into three sections:
Section 1: General
This section is informative only and contains background information related to methodologies,
models and description techniques.
Section 2: Service Description (Stage 1)
This section contains the Service descriptions from the point of view of the User, and is
normative.
Clauses 6 to 8 contain the static descriptions including definition, description, Service
interworking and service attributes of the three Services. The procedures for invocation and
termination of the Services are common for all three Services and are specified in clause 9 for
calls intemal to a PISN. The procedure for calls where interworking with another network
occurs are specifled in clause 10.
The dynamic Service description, using SDL is presented in Clause 11.
vii

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ISOKEC 11574: 1994 (E)
Section 3: Functional capabilities and information flows (Stage 2)
This section is normative and spedies the functional capabilities and the information flows
needed to the Service.
support
Clause 12 specifies the functional model, and clauses 13 and 14 spec@ the information flow
and sequences for a number of common cal1 cases. Clause 15 gives the SDL diagrams for the
functional entities, and clause 16 Shows the possible allocation of functional entities to network
components.
Annex A provides a listing of service attributes as given in ITU-T Recommendation 1.140.
Annex B describes the relationship between the bearer services specified in this International
Standard and the Teleservice, Telephony.
Annex C is a list of useful references. It is not normative.
This International Standard and a companion International Standard “Information technology -
Telecommunications and information exchange between systems - Private Integrated Services
Network - Circuit mode basic Services - Inter-exchange signalling procedures and protocol”
have been prepared in parallel and have been approved at the same time.
The 64 kbit/s circuit mode bearer services specified in this International Standard complement
and are compatible with the corresponding services for public ISDN as specified in KU-T
Recommendation 1.23 1 for Stage 1 and Recommendation Q.71 for Stage 2. Some of the
terminology used in this International Standard is different from the public ISDN terminology,
and where appropriate new terms have been defined.
This International Standard is based upon the European Computer Manufacturer ’s Association
Standard, ECMA- 143.
. . .
VW

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INTERNATIONAL STANDARD @ISO/IEC ISO/IEC 11574: 1994 (E)
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
Originating Number or the Connected Number of a cal1
Section 1: General
from or to a public ISDN is regarded as part of the basic
Services in a PISN.
1 Scope
6. The Provision (either explicitly or implicitly) by the User
to the network, of its own number (Originating Number
This International Standard specifies the service
or Connected Number), and the Provision of an Originat-
description and control aspects, including functional
ing Number or a Connected Number by a PISN to another
capabilities and information flows, of standardised circuit-
network is a part of the basic Services in a PISN and not a
mode bearer services which may be supported by a Private
part of the Calling Line Identification Presentation and
Integrated Services Network (PEN).
Connected Line Identification Presentation supplementary
Services. Those supplementary Services are concemed
This International Standard includes the following basic
only with the presentation of the number fiom the
Services:
network to the served PISN User.
l Circuit-mode 64 kbit/s unrestricted 8 kHz structured
bearer Service category;
2 Normative references
l Circuit-mode 64 kbit/s 8 kHz structured bearer
service category usable for Speech information
The following standards contain provisions which, through
transfer;
reference in this text, constitute provisions of this Intema-
l Circuit-mode 64 kbit/s 8 & structured bearer tional Standard. At the time of publication, the editions
service category usable for 3,l kHz audio infor- indicated were valid. All Standards are subject to revision,
mation transfer. and Parties to agreements based on this International Stan-
dard are encouraged to investigate the possibility of apply-
A PISN shall support at least one of the above three bearer
ing the most recent editions of the Standards indicated
services to conform with this International Standard.
below. Members of IEC and ISO maintain registers of
The scope of this International Standard does not include:
currently valid International Standards.
l the negotiation of service at cal1 establishment time,
2.1 International Standards
l the Change of service during a call, and
ISODX 1157 1: 1994, Information technology - Tele-
l unidirectional services.
communications and information exchange between
This International Standard includes optional procedures
systems - Numbering and sub-addressing in private inte-
for the Provision of functions equivalent to the following
grated Services network.
public ISDN supplementary Services: Subaddress and
ISOIIEC 11579-1: 1994, Information Technology - Tele-
Multiple Subscriber Number.
exchange between
communications and information
NOTES
systems - Private integrated Services network - Part 1:
Reference conflguration for PISN Exchanges (ZPINX).
1. Supplementary services and other bearer services which
tan be used in conjunction with 64 kbits/s circuit
switched bearer Services specified in this International
2.2 ITU-T Recommendations
Standard are dealt with in other International Standards.
Recommendation G.7 11 (1992), Primary PC. ‘. multiplex
2. Service specifications are based on information concem-
equipment for voice frequencies
ing the corresponding public ISDN Service available at
time of publication of this International Standard.
Recommendation 1.112 (1992), Vocabulary of terms for
3. KU-T treat Subaddressing and Multiple Subscriber
ISDNs.
Number as supplementary Services.
Recommendation 1.130 (1992), Method for the characteri-
4. The use of the Direct Dia1 In supplementary service of a
sation of telecommunication Services supported by an
public ISDN for calls incoming to a PISN Flom a public
ISDN and network capabilities of an ISDN.
ISDN is regarded as part of the basic Services in a PISN.
Recommenc&ion 1.140 (1992), Attribute technique for the
5. The use of the Calling Line Identification Presentation
characterisation of telecommunications Services supported
and Connected Line Identification Presentation supple-
by an ISDN and network capabilities of an ISDN.
mentary Services of a public XSDN for obtaining the
1

---------------------- Page: 9 ----------------------
0 ISO/IEC
ISOAEC 11574: 1994 (E)
Recommendation 1.2 10 (1992), Principles of telecommu- connection handling functions used for the Provision of
nications Services supported by an ISDN and the means to telecommunication services. A nodal entity may consist of
describe them. one or more nodes.
Recommendation 1.23 1 (1992), Circuit-mode bearer serv- 3.7 PISN User: An entity which uses telecommunica-
ice categories tion services offered by a PISN, and which therefore
directly or indirectly uses the services of the Network
Recommendation 1.25 1.1 (1992), Number Identifiation
Layer.
Supplementary Services - Direct DiaHing-In.
service [Telecommunication services]: That which
3.8
Recommendation 1.25 1.3 (1992), Number Identz$zation
is offered by a PISN Operator and/or owner to its customers
Supplementary Services - Calling Line Identijication
in Order to satisfy a specific telecommunication require-
Presentation.
ment.
Recommendation 1.25 1.5 (1992), Number Identifcation
Unless otherwise stated, the term “service” shall mean
Supplementary Services - Connected Line IdentiJcation
“bearer [telecommunication] service” .
Presentation (COLP).
3.9 User: An entity which uses telecommunication
Recommendation 1.520 (1992), General arrangements for
services offered by a network, and which therefore directly
network interworking between ISDNs.
or indirectly uses the services of the Network Layer.
Recommendation Q.65 (1992), Stage 2 of the method for
the characterisation of Services supported by an ISDN.
4 Symbols and abbreviations
Recommendation X.3 1 (1992), Support of packet-mode
terminal equiment by an ISDN
Clearing Cause
cc
Cal1 Control generic functional entity
cc [FE1
3 Definitions
CCA Cal1 Control Agent generic functional
entity
For the purpose of this International Standard, the follow-
ing definitions apply. For other terms used in this
confirmation
cfm 1 c
International Standard, the definitions in ISO/IEC 115794
CH Cal1 History
and ITU-T Rec. 1.112 apply.
Charme1 Identifier
CI
3.1 call: The instance of the use of a service.
CN Connected Number
3.2 intervening network (IVN): The generic term for
Connected Subaddress
CS
any real type of network which is employed for the provi-
sion of inter-PINX connections. CT Connection Type
DN Destination Number
3.3 mixed public/private ISDN: An Overall ISDN
which consists of any concatenation of public/private
DS Destination Subaddress
networks.
Gmctional entity
FE
NOTE7. Services are transparent to the users across public
HLC High Layer Compatibility
and private network components of a mixed public/private
network.
ind 1 i indica
...