SIST EN 300 141-2 V1.2.4:2005

• Abstract:

  Update references from ETS 300 102-1 and associated I-ETSs to ETS 300 403.

• Status: Published
• Publication Date: 31-Mar-2005
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2005
• Due Date: 01-Apr-2005
• Completion Date: 01-Apr-2005
• Ref Project: ETSI EN 300 141-2 V1.2.4 (1998-06) - Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification

SIST EN 300 141-2 V1.2.4:2005 is the Slovenian adoption of the ETSI European Standard for the Integrated Services Digital Network (ISDN) Call Hold (HOLD) supplementary service over the Digital Subscriber Signalling System No. one (DSS1) protocol. It specifies the Protocol Implementation Conformance Statement (PICS) proforma that a supplier completes to state which HOLD capabilities, options and roles are implemented for conformance with EN 300 141-1. It is intended for user and network implementations, including the private network cases covered by the standard.

What does SIST EN 300 141-2 V1.2.4:2005 specify?

SIST EN 300 141-2 V1.2.4:2005 specifies the PICS proforma for the DSS1 HOLD supplementary service in stage three of ISDN service specification. It tells a supplier what to declare about an implementation that claims conformance to EN 300 141-1, and it follows the conformance-testing approach of ISO/IEC 9646-7.

The scope places the service at the T reference point, or at coincident S and T reference points, for pan-European ISDN provided by public telecommunications operators. In practice, that means the document is used to describe protocol behavior at the user-network interface, not the service idea in general.

The document is organized into a short core and three annexes.

Annex	What it covers
Annex A	Normative PICS proforma for EN 300 141-1
Annex B	Normative requirements list for related base PICS proformas
Annex C	Informative changes compared with the previous ETS 300 141-2

Clause 1 gives the scope, clause 2 lists the normative references, clause 3 defines key terms, clause 4 lists abbreviations, and clause 5 states the conformance rules for a valid PICS.

What are the key requirements of SIST EN 300 141-2 V1.2.4:2005?

SIST EN 300 141-2 V1.2.4:2005 is mainly about how to complete and use the PICS form, and how that form relates to the underlying HOLD protocol specification. The important point for practice is that conformance is not asserted by the document alone - it is asserted by a completed PICS that matches the standard’s structure.

• Clause 5 requires technical equivalence to Annex A. A conforming PICS must preserve the numbering and order of the items in Annex A. That keeps declarations comparable across suppliers and test labs.
• Clause 5 requires the PICS to describe an implementation that claims conformance to EN 300 141-1. It must also be completed according to the instructions in Annex A and identify both the supplier and the implementation. This matters because the statement has to be tied to a specific product or system version.
• Annex A.1 separates the form into common, user and network parts. The Roles subclause applies to all implementations, while the User part is only for user implementations and the Network part only for network implementations. That helps a buyer or tester fill in only the sections that match the product role.
• Annex A.1.2 uses a global conformance statement. A “Yes” answer means the remaining items are completed to support test selection for optional functions; a “No” answer still requires completion, with non-supported mandatory capabilities identified and explained. In practice, the form can capture partial support as well as full support.
• Annex A records the main HOLD capabilities. For the user side, it covers holding a call in the Active state, holding a call in the Call Delivered state for outgoing calls, retrieving a held call, and generating notifications for private ISDN interworking. For the network side, it covers the matching network functions, including notification delivery and acceptance.
• Annex A also covers protocol data and call-state declarations. The tables include notification indicator information element values for remote hold and remote retrieval, plus the relevant call states and timers. This is the part that tells a reviewer what the implementation actually supports on the wire.
• Annex B links this PICS to the related base PICS proformas. It repeats the relevant items for basic call, generic functional protocol and supplementary service interactions, using conditional or optional status markers. This matters because HOLD support depends on consistency with those base capabilities.
• Annex B identifies message and timer support that must align with HOLD behavior. It covers HOLD, RETRIEVE and NOTIFY message handling, notification indicator information elements, call-state items, timers, and interaction with other supplementary services. In practice, this is what a conformance engineer checks before choosing test cases.

What terms does SIST EN 300 141-2 V1.2.4:2005 define?

SIST EN 300 141-2 V1.2.4:2005 defines the terms used to complete and review a conformance statement for the HOLD protocol.

• Protocol Implementation Conformance Statement (PICS): a supplier’s statement of which capabilities have been implemented for a given OSI protocol.
• PICS proforma: a questionnaire-style document that becomes the PICS when it is completed for a specific implementation.
• Static conformance review: a comparison of the completed PICS against the static conformance requirements in the relevant standard.
• Implementation Under Test (IUT): the implementation being checked for conformance.
• System Under Test (SUT): the system in which the IUT resides.
• System Conformance Statement (SCS): a document that summarizes which standards are implemented and what conformance is claimed.
• Digital Subscriber Signalling System No. one (DSS1): the signalling protocol used for the ISDN user-network interface in this standard.

Who uses SIST EN 300 141-2 V1.2.4:2005?

SIST EN 300 141-2 V1.2.4:2005 is used by suppliers of ISDN user or network implementations who need to state conformance to EN 300 141-1. It is also used by clients, test engineers and conformance labs that need a structured way to review what has been implemented and which test cases are relevant.

The standard is especially relevant where HOLD is being implemented at the user side, the network side, or both. It is also useful when the service provider operates in a private ISDN, because the form includes interworking-related notification items for that case.

What changed in SIST EN 300 141-2 V1.2.4:2005 from the previous edition?

The change note states that the standard was converted to EN layout. It also updates references from ETS 300 102 and associated I-ETSs to EN 300 403, and replaces non-specific references to basic standards with the latest version where that was intended.

Which standards are used with SIST EN 300 141-2 V1.2.4:2005?

SIST EN 300 141-2 V1.2.4:2005 refers to these companion standards and references:

Reference	What it contributes
EN 300 141-1	The HOLD protocol specification that the PICS describes
EN 300 403-1	Basic call control protocol specification for the signalling network layer
EN 300 403-3	Basic call control PICS proforma used in the requirements list
EN 300 195-1	Supplementary service interactions protocol specification
EN 300 195-2	Supplementary service interactions PICS proforma
EN 300 196-1	Generic functional protocol for supplementary services
EN 300 196-2	Generic functional protocol PICS proforma
ISO/IEC 9646-1	General conformance testing concepts
ISO/IEC 9646-7	Rules for implementation conformance statements
CCITT Recommendation I.130	Method for characterizing telecommunication services and network capabilities
ITU-T Recommendation I.411	ISDN user-network interface reference configurations

What does the SIST EN 300 141-2 V1.2.4:2005 document contain?

SIST EN 300 141-2 V1.2.4:2005 contains a completed-form template rather than protocol procedures or test cases. Annex A gives the PICS tables for implementation identification, global conformance, roles, user and network capabilities, protocol data unit support, parameters, timers and call states.

Annex B contains a requirements list that points back to the related basic call, generic functional protocol and supplementary service interactions PICS proformas. That makes the document useful for conformance assessment and for selecting the right test cases from the companion standards.

Annex C records the changes from the previous edition. The body of the document also includes the conformance clause, abbreviations, definitions and normative references needed to complete and interpret the form.

SLOVENSKI STANDARD
01-april-2005
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Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol
Implementation Conformance Statement (PICS) proforma specification
Ta slovenski standard je istoveten z: EN 300 141-2 Version 1.2.4
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 300 141-2 V1.2.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Call Hold (HOLD) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 2: Protocol Implementation Conformance
Statement (PICS) proforma specification

2 EN 300 141-2 V1.2.4 (1998-06)
Reference
REN/SPS-05145-S-2 (1b0i0iqo.PDF)
Keywords
ISDN, HOLD, DSS1, supplementary service,
PICS
ETSI
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Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1998.
All rights reserved.
ETSI
3 EN 300 141-2 V1.2.4 (1998-06)
Contents
Intellectual Property Rights.5
Foreword .5
1 Scope.6
2 Normative references .6
3 Definitions.7
4 Abbreviations.7
5 Conformance.8
Annex A (normative): PICS proforma for EN 300 141-1 .9
A.1 Instructions for completing the PICS proforma.9
A.1.1 Identification of the implementation . 9
A.1.2 Global statement of conformance . 9
A.1.3 Explanation of PICS proforma subclauses. 9
A.1.4 Symbols, abbreviations and terms. 10
A.2 Identification of the implementation.10
A.2.1 Implementation Under Test (IUT) identification . 10
A.2.2 System Under Test (SUT) identification. 10
A.2.3 Product supplier. 11
A.2.4 Client . 11
A.2.5 PICS contact person. 11
A.3 PICS/System Conformance Statement (SCS).12
A.4 Identification of the protocol .12
A.5 Global statement of conformance .12
A.6 Roles.13
A.7 User .13
A.7.1 Major capabilities . 14
A.7.2 Subsidiary capabilities . 14
A.7.3 Protocol data units . 14
A.7.4 Protocol data unit parameters. 14
A.7.5 Timers. 14
A.7.6 Call states. 14
A.8 Network.15
A.8.1 Major capabilities . 15
A.8.2 Subsidiary capabilities . 15
A.8.3 Protocol data units . 15
A.8.4 Protocol data unit parameters. 15
A.8.5 Timers. 16
A.8.6 Call states. 16
Annex B (normative): Requirements list.17
B.1 User .17
B.1.1 Requirements on items used in the basic call PICS . 17
B.1.2 Requirements on items used in the generic functional protocol PICS . 17
B.1.3 Requirements on items used in the supplementary service interactions PICS.18
B.2 Network.19
B.2.1 Requirements on items used in the basic call PICS . 19
B.2.2 Requirements on items used in the generic functional protocol PICS . 19
ETSI
4 EN 300 141-2 V1.2.4 (1998-06)
B.2.3 Requirements on items used in the supplementary service interactions PICS.21
Annex C (informative): Changes with respect to the previous ETS 300 141-2 .22
History.23
ETSI
5 EN 300 141-2 V1.2.4 (1998-06)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect
of ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)
which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Signalling
Protocols and Switching (SPS).
The present document is part 2 of a multi-part standard covering the Digital Subscriber Signalling System No. one
(DSS1) protocol specification for the Integrated Services Digital Network (ISDN) Call Hold (HOLD) supplementary
service, as described below:
Part 1: "Protocol specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the user";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network".
To evaluate conformance of a particular implementation, it is necessary to have a statement of which capabilities and
options have been implemented for a given Open Systems Interconnection (OSI) protocol. Such a statement is called a
Protocol Implementation Conformance Statement (PICS).
The present version updates the references to the basic call specifications.
National transposition dates
Date of adoption of this EN: 19 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
ETSI
6 EN 300 141-2 V1.2.4 (1998-06)
1 Scope
This second part of EN 300 141 is applicable to the stage three of the Call Hold (HOLD) supplementary service for the
pan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunications
operators at the T reference point or coincident S and T reference point (as defined in ITU-T Recommendation
I.411 [11]) by means of the Digital Subscriber Signalling System No. one (DSS1) protocol. Stage three identifies the
protocol procedures and switching functions needed to support a telecommunications service (see CCITT
Recommendation I.130 [10]).
The present document provides the Protocol Implementation Conformance Statement (PICS) proforma for the ISDN
DSS1 HOLD supplementary service protocol as specified in EN 300 141-1 [2] in compliance with the relevant
requirements and in accordance with the relevant guidance given in ISO/IEC 9646-7 [9].
The supplier of a protocol implementation which is claimed to conform to EN 300 141-1 [2] is required to complete a
copy of the PICS proforma provided in annex A of the present document and is required to provide the information
necessary to identify both the supplier and the implementation.
2 Normative references
References may be made to:
a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in
which case, subsequent revisions to the referenced document do not apply; or
b) all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
c) all versions subsequent to and including the identified version (identified by "onwards" following the version
identity); or
d) publications without mention of a specific version, in which case the latest version applies.
A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System
No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1:
Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".
[2] EN 300 141-1 (V1.2): "Integrated Services Digital Network (ISDN); Conference call add-on
(CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[3] EN 300 195-1: "Integrated Services Digital Network (ISDN); Supplementary service interactions;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[4] EN 300 195-2: "Integrated Services Digital Network (ISDN); Supplementary service interactions;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol Implementation
Conformance Statement (PICS) proforma specification".
[5] EN 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional protocol for the
support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1 Protocol specification".
[6] EN 300 196-2: "Integrated Services Digital Network (ISDN); Generic functional protocol for the
support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification".
[7] EN 300 403-3: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System
No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 3:
Protocol Implementation Conformance Statement (PICS) proforma specification".
ETSI
7 EN 300 141-2 V1.2.4 (1998-06)
[8] ISO/IEC 9646-1: "Information technology - Open systems interconnection - Conformance testing
methodology and framework - Part 1: General concepts".
[9] ISO/IEC 9646-7: "Information technology - Open systems interconnection - Conformance testing
methodology and framework - Part 7: Implementation Conformance Statements".
[10] CCITT Recommendation I.130 (1988): "Method for the characterization of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[11] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".
3 Definitions
For the purposes of the present document, the following definitions apply, in addition to those given in
EN 300 141-1 [2]:
Protocol Implementation Conformance Statement (PICS): A statement made by the supplier of an Open Systems
Interconnection (OSI) implementation or system, stating which capabilities have been implemented for a given OSI
protocol (see ISO/IEC 9646-1 [8]).
PICS proforma: A document, in the form of a questionnaire, designed by the protocol specifier or conformance test
suite specifier, which, when completed for an OSI implementation or system becomes the PICS (see
ISO/IEC 9646-1 [8]).
static conformance review: A review of the extent to which the static conformance requirements are met by the IUT,
accomplished by comparing the PICS with the static conformance requirements expressed in the relevant standard(s)
(see ISO/IEC 9646-1 [8]).
4 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AND Boolean "and"
AS Auxiliary States
C Conditional requirement (to be observed if the relevant conditions apply)
DSS1 Digital Subscriber Signalling System No. one
HOLD Call Hold
IER Information Elements Received
IET Information Elements Transmitted
ISDN Integrated Services Digital Network
IUT Implementation Under Test
M Mandatory requirement (to be observed in all cases)
MC Major Capabilities
MR Messages Received
MT Messages Transmitted
N/A Not applicable, not supported or the conditions for status are not met
No not supported
NOT Boolean "not"
O Option (may be selected to suit the implementation, provided that any requirements applicable to
the option are observed)
O.n Options, but support required for either at least one or only one of the options in the group labelled
with the same numeral "n"
OR Boolean "or"
OSI Open Systems Interconnection
P Parameters
PICS Protocol Implementation Conformance Statement
SC Subsidiary Capabilities
SCS System Conformance Statement
ETSI
8 EN 300 141-2 V1.2.4 (1998-06)
SUT System Under Test
TM Timers
Yes supported
5 Conformance
A PICS proforma which conforms to this PICS proforma specification shall be technically equivalent to annex A, and
shall preserve the numbering and ordering of the items in annex A.
A PICS which conforms to this PICS proforma specification shall:
a) describe an implementation which claims to conform to EN 300 141-1 [2];
b) be a conforming ICS proforma which has been completed in accordance with the instructions for completion
given in clause A.1;
c) include the information necessary to uniquely identify both the supplier and the implementation.
ETSI
9 EN 300 141-2 V1.2.4 (1998-06)
Annex A (normative):
PICS proforma for EN 300 141-1
Notwithstanding the provisions of the copyright clause related to the text of the present document, ETSI grants that users
of the present document may freely reproduce the PICS proforma in this annex so that it can be used for its intended
purposes and may further publish the completed PICS.
A.1 Instructions for completing the PICS proforma
A.1.1 Identification of the implementation
Identification of the Implementation Under Test (IUT) and the system in which it resides (the System Under Test
(SUT)) should be filled in so as to provide as much detail as possible regarding version numbers and configuration
options.
The product supplier information and client information should both be filled in if they are different.
A person who can answer queries regarding information supplied in the PICS should be named as the contact person.
The SCS as defined in ISO/IEC 9646-1 [8] is a document supplied by the client or product supplier that summarizes
which OSI International Standards, ITU-T (CCITT) Recommendations, ETSs or other standards are implemented and to
which conformance is claimed. The PICS/SCS subclause should describe the relationship of the PICS to the SCS.
A.1.2 Global statement of conformance
If the answer to the statement in this subclause is "Yes", all subsequent subclauses should be completed to facilitate
selection of test cases for optional functions.
If the answer to the statement in this subclause is "No", all subsequent subclauses should be completed, and all non-
supported mandatory capabilities should be identified and explained. Explanations may be entered in the comments field
at the bottom of each table or on attached sheets of paper.
A.1.3 Explanation of PICS proforma subclauses
The PICS proforma contains a Roles clause and thereafter is presented in two parts (for user and network) with the
following subclauses, as required:
- major capabilities;
- subsidiary capabilities;
- protocol data unit support;
- protocol data unit parameters;
- timers;
- call states.
The User clause shall only be completed for user implementations (including private network implementations) while
the Network clause shall only be completed for network implementations. The Roles subclause shall be completed for
all implementations.
The relationship between this PICS proforma and other related PICS proforma (e.g. the basic call PICS proforma) is
expressed in the requirements list contained in annex B. This provides the additional restrictions placed on the related
proforma (different conditions, different status, etc.).
ETSI
10 EN 300 141-2 V1.2.4 (1998-06)
A.1.4 Symbols, abbreviations and terms
The PICS proforma contained in this annex is comprised of information in tabular form in accordance with the
guidelines presented in ISO/IEC 9646-7 [9].
The reference column contained in the tables gives reference to the appropriate part(s) of EN 300 141-1 [2] describing
the particular item. Note, however, that a reference merely indicates the place where the core of a description of an item
can be found. Any additional information contained in EN 300 141-1 [2] has to be taken into account when making a
statement about the conformance of that particular item.
The following common notations, defined in ISO/IEC 9646-7 [9], are used for the status column:
M mandatory
O optional
N/A not applicable
O. for mutually exclusive or selectable options from a set
The following common notations, defined in ISO/IEC 9646-7 [9], are used for the support column:
Y for supported/implemented
N for not supported/not implemented
A.2 Identification of the implementation
A.2.1 Implementation Under Test (IUT) identification
IUT name:
.........................................................................................................................................................................................
.........................................................................................................................................................................................
IUT version:
.........................................................................................................................................................................................
A.2.2 System Under Test (SUT) identification
SUT name:
.........................................................................................................................................................................................
...................................................
...