SIST EN 300 138-2 V1.3.4:2005

• 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 300 138-2 V1.3.4 (1998-06) - Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification

SIST EN 300 138-2 V1.3.4:2005 is the Slovenian adoption of the ETSI standard for the Integrated Services Digital Network (ISDN) Closed User Group (CUG) supplementary service over the Digital Subscriber Signalling System No. one (DSS1) protocol. It provides the Protocol Implementation Conformance Statement (PICS) proforma for suppliers of implementations that claim conformance to EN 300 138-1. In practice, it is the form used to declare which CUG capabilities, options and message elements an implementation supports.

What does SIST EN 300 138-2 V1.3.4:2005 specify?

SIST EN 300 138-2 V1.3.4:2005 specifies the PICS proforma for the stage three CUG supplementary service for pan-European ISDN at the T reference point, or at coincident S and T reference points, using DSS1. It tells a supplier how to document an implementation for conformance checking against EN 300 138-1, following the conformance testing approach in ISO/IEC 9646-7.

The document is organized into five clauses and three annexes:

Part	What it covers
Clauses 1-5	Scope, normative references, definitions, abbreviations, and conformance
Annex A	Normative PICS proforma to complete for a specific implementation
Annex B	Normative requirements list that links this PICS to related base PICS proformas
Annex C	Informative changes with respect to the previous ETS 300 138-2

Annex A is the working part for implementation declarations. Annex B shows how this CUG proforma depends on other DSS1 PICS documents. Annex C records the revisions made in this edition.

What are the key requirements of SIST EN 300 138-2 V1.3.4:2005?

The main requirement in SIST EN 300 138-2 V1.3.4:2005 is to complete a PICS that accurately describes the implementation, and to do so in the exact structure given in Annex A. That matters because this document is used to compare a real implementation with the static conformance requirements in EN 300 138-1.

Conformance and completion rules

Clause 5 requires a conforming PICS to be technically equivalent to Annex A and to preserve the numbering and order of its items. The completed PICS must describe an implementation that claims conformance to EN 300 138-1 and must include enough information to identify both the supplier and the implementation. In practice, this makes the declaration traceable and reviewable.

Annex A.1 explains how to complete the form. The supplier should identify the Implementation Under Test (IUT), the System Under Test (SUT), the product supplier, the client, and a contact person. That matters when a reviewer needs to relate a declared feature set to a specific product version or configuration.

Roles and applicability

Annex A splits the form into a Roles clause and separate User and Network parts. The Roles clause applies to all implementations, while the User clauses are only for user implementations, including private network implementations, and the Network clauses are only for network implementations. This avoids filling in sections that do not apply to the product being assessed.

Table A.1 also distinguishes support at the user interface, the served user interface, the remote user interface, and the network interface. In practice, this helps a vendor show whether the implementation behaves as user-side equipment, network-side equipment, or both.

How support is recorded

Annex A.1.4 uses the standard conformance-test notation from ISO/IEC 9646-7. Status values include M, O, N/A and O.n, while support values use Y and N. This is the practical language of the PICS: it shows whether a capability is mandatory, optional, not applicable, or one of a selectable set, and whether the implementation actually supports it.

User-side functions

For user implementations, Annex A highlights the explicit request of CUG as the main capability. The user tables then cover whether the implementation receives and transmits Facility information element components such as CUGCall invoke and CUGCall return error. In practical terms, this shows whether the user side can initiate or react to the CUG signalling needed for the service.

Annex B adds related dependencies for user implementations. It links this PICS to the basic call, generic functional protocol, and supplementary service interactions proformas, including SETUP, DISCONNECT, RELEASE and RELEASE COMPLETE PDU parameters. This matters because a CUG implementation still relies on the surrounding DSS1 call-control and supplementary-service framework.

Network-side functions

For network implementations, Annex A requires support for the explicit request of CUG and the default request of CUG. It also covers optional service behavior such as barring incoming calls within a CUG, barring outgoing calls within a CUG, several CUG subscriptions with a defined maximum, outgoing access, and incoming access. These items tell a network operator or vendor which CUG service variants the network side provides.

Annex A also includes network PDU details, such as received and transmitted Facility information element components and the cause information element value #87, “user not a member of CUG”. In practice, this is the signalling evidence that a network implementation must be able to generate and process for CUG handling.

Relationship to other PICS documents

Annex B shows that this document is not a standalone feature list. It reuses items from EN 300 196-2 for generic functional protocol support and from EN 300 195-2 for supplementary service interactions, then states the extra conditions needed for CUG. That is important for conformance work because it tells the reviewer which other completed PICS forms must be considered alongside this one.

What terms does SIST EN 300 138-2 V1.3.4:2005 define?

• Protocol Implementation Conformance Statement (PICS) - A statement from a supplier describing which capabilities of a protocol implementation are supported.
• PICS proforma - A questionnaire-style document that becomes a PICS when completed for a specific implementation.
• Static conformance review - A comparison between the completed PICS and the static conformance requirements in the relevant standards.
• Implementation Under Test (IUT) - The protocol implementation being assessed.
• System Under Test (SUT) - The system that contains the IUT and its configuration context.
• Closed User Group (CUG) - A supplementary service that controls call access within defined user groups.
• Digital Subscriber Signalling System No. one (DSS1) - The signalling protocol used for the ISDN service specified here.

Who uses SIST EN 300 138-2 V1.3.4:2005?

SIST EN 300 138-2 V1.3.4:2005 is used by suppliers of ISDN user-side and network-side implementations that claim conformance to EN 300 138-1. It is also used by conformance testers, quality managers, and engineering teams who need a structured declaration of supported CUG features.

For procurement and acceptance work, it helps buyers and reviewers check whether a product supports the CUG options they need, such as explicit or default request handling, access options, and call barring behavior. For developers, it provides the checklist used to complete the implementation statement and support later test selection.

What changed in SIST EN 300 138-2 V1.3.4:2005 from the previous edition?

This edition replaces ETS 300 138-2. Annex C states that the changes are conversion to EN layout, replacement of references to ETS 300 102 and associated I-ETSs with EN 300 403, and substitution of non-specific references to basic standards so they point to the latest version when that was the intent. The foreword also says that this version updates the references to the basic call specifications.

Which standards are used with SIST EN 300 138-2 V1.3.4:2005?

Standard	What it contributes
EN 300 138-1	The CUG protocol specification that this PICS refers to
EN 300 195-1	Protocol specification for supplementary service interactions
EN 300 195-2	PICS proforma for supplementary service interactions
EN 300 196-1	Generic functional protocol for the support of supplementary services
EN 300 196-2	PICS proforma for the generic functional protocol
EN 300 403-1	Basic call control signalling network layer protocol specification
EN 300 403-3	PICS proforma for basic call control
ISO/IEC 9646-1	General concepts for conformance testing and ICS work
ISO/IEC 9646-7	Guidance for implementation conformance statements
CCITT Recommendation I.130	Characterization of telecommunications services in ISDN
ITU-T Recommendation I.411	ISDN user-network reference configurations

What does the SIST EN 300 138-2 V1.3.4:2005 document contain?

Annex A contains the full PICS proforma, including identification fields, the global conformance statement, role selection, and user and network capability tables. It also includes tables for protocol data units, protocol data element parameters, timers, and call states.

Annex B contains a requirements list that repeats selected items from the basic call, generic functional protocol, and supplementary service interactions PICS documents, so the related base forms can be completed consistently. The annex uses conditions and status markings to show how the CUG service depends on other DSS1 capabilities.

Annex C gives the changes from the previous ETS edition. Overall, the document is a conformance-documentation tool for implementation assessment, testing preparation, and formal supplier declarations rather than a protocol behavior specification.

SLOVENSKI STANDARD
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Integrated Services Digital Network (ISDN); Closed User Group (CUG) 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 300 138-2 Version 1.3.4
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 300 138-2 V1.3.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Closed User Group (CUG) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 2: Protocol Implementation Conformance
Statement (PICS) proforma specification

2 EN 300 138-2 V1.3.4 (1998-06)
Reference
REN/SPS-05145-H-2 (1a0i0j2o.PDF)
Keywords
ISDN, CUG, 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 300 138-2 V1.3.4 (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.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 . 13
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.14
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. 16
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.18
B.2.1 Requirements on items used in the basic call PICS . 18
B.2.2 Requirements on items used in the generic functional protocol PICS . 18
ETSI
4 EN 300 138-2 V1.3.4 (1998-06)
B.2.3 Requirements on items used in the supplementary service interactions PICS.19
Annex C (informative): Changes with respect to the previous ETS 300 138-2 .20
History.21
ETSI
5 EN 300 138-2 V1.3.4 (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) Closed User Group (CUG)
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 300 138-2 V1.3.4 (1998-06)
1 Scope
This second part of EN 300 138 is applicable to the stage three of the Closed User Group (CUG) 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 CUG supplementary service protocol as specified in EN 300 138-1 [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 300 138-1 [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 300 138-1 (V1.3): "Integrated Services Digital Network (ISDN); Closed User Group (CUG)
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 300 138-2 V1.3.4 (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 300 138-1 [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"
C Conditional requirement (to be observed if the relevant conditions apply)
CUG Closed User Group
DSS1 Digital Subscriber Signalling System No. one
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
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
R Role
RL Requirements List
SC Subsidiary Capabilities
SCS System Conformance Statement
SS Supplementary Service
ETSI
8 EN 300 138-2 V1.3.4 (1998-06)
SUT System Under Test
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 300 138-1 [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 300 138-2 V1.3.4 (1998-06)
Annex A (normative):
PICS proforma
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, ENs 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 (RL) contained in annex B. This provides the additional restrictions placed on the
related proforma (different conditions, different status, etc.).
ETSI
10 EN 300 138-2 V1.3.4 (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 table
...