SIST ETS 300 359-2:1998

• Abstract:

  ISDN user-network interface layer 3 protocol implementation conformance statement (PICS) proforma. This work provides a basis for further work on PIXIT & ATS for supplementary services. To be spec d according to ISO 9646. Covers both user & network.

• Status: Published
• Publication Date: 30-Nov-1998
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPS - Signalling protocols and switching
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-1998
• Due Date: 01-Dec-1998
• Completion Date: 01-Dec-1998
• Mandate: T-234B
• Ref Project: ETSI ETS 300 359-2 ed.1 (1995-09) - Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber (CCBS) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification

SIST ETS 300 359-2:1998 is the Protocol Implementation Conformance Statement (PICS) proforma specification for the Integrated Services Digital Network (ISDN) Completion of Calls to Busy Subscriber (CCBS) supplementary service using the Digital Subscriber Signalling System No. one (DSS1) protocol. It is an ETSI European Telecommunications Standard used by suppliers to state which CCBS capabilities an implementation supports, so conformance to ETS 300 359-1 can be checked in a consistent way. The document is written for both user and network implementations.

What does SIST ETS 300 359-2:1998 specify?

SIST ETS 300 359-2:1998 specifies the PICS proforma for the stage three CCBS supplementary service on the ISDN user-network interface layer 3. It tells the supplier how to declare support for the CCBS protocol procedures and switching functions at the T reference point or coincident S and T reference point.

The document is organized as a short front part plus two normative annexes. Clause 1 states the scope, clause 2 lists the normative references, clause 3 gives definitions, clause 4 lists symbols and abbreviations, and clause 5 sets out conformance rules.

Annex	What it covers
Annex A (normative)	The PICS proforma, including instructions, implementation identification, roles, user items and network items
Annex B (normative)	The requirements list linking this PICS to the basic call, generic functional protocol and supplementary service interactions PICS

What are the key requirements of SIST ETS 300 359-2:1998?

The main requirement of SIST ETS 300 359-2:1998 is that a completed PICS must be technically equivalent to annex A and must keep the same numbering and order. In practice, this matters because test planners and assessors can compare forms item by item without reinterpreting the structure.

Conformance and identification

A completed PICS for SIST ETS 300 359-2:1998 must describe an implementation that claims conformance to ETS 300 359-1. It must also identify both the supplier and the implementation. That lets a reviewer link the declaration to a specific product, version and configuration.

Annex A requires identification of the Implementation Under Test (IUT) and the System Under Test (SUT), plus supplier, client and contact person details. This is important in real projects because CCBS support often depends on the exact product build and system environment.

Roles and scope of completion

SIST ETS 300 359-2:1998 separates user and network responsibilities. The Roles subclause applies to all implementations, while the User subclause is completed only for user implementations, including private network implementations, and the Network subclause only for network implementations.

The role questions also distinguish support at the called remote user, calling served user, and the interworking case with private ISDN at the T reference point. This helps a buyer or test lab see exactly which side of the CCBS service is being claimed.

User-side capabilities

For the user side, annex A covers major capabilities such as global recall, specific recall, call information retention, and the CCBS request retention option. These items show whether a terminal or user-side implementation can receive recalls, keep call information, or keep a request active long enough for the service to work.

Annex A also lists subsidiary capability on the user side, including retention of the CallLinkageID when a CallInfoRetain invoke component is received. In practice, this tells the implementer whether the product must preserve identifiers used by related procedures.

Network-side capabilities

For the network side, annex A covers call information retention, the CCBS request retention option, global recall, specific recall, and the check for identical calls option. These items matter because the network must decide how to manage retained call data and when to offer recalls.

The network side also includes subsidiary capabilities for call information retention, including whether retained call information is released early or held until the timer T-RETENTION expires. This is a practical implementation choice that affects memory use and service behavior.

Protocol data units, parameters and timers

Annex A lists protocol data unit support and protocol data unit parameters for user and network. The named CCBS facility information element components include CCBSRemoteUserFree, CCBSStopAlerting, CCBSErase, CCBSBFree, CCBSStatusRequest, CallInfoRetain, EraseCallLinkageID, CCBSRequest, CCBSDeactivate, CCBSInterrogate, CCBSCall, CCBS-T-Available, CCBS-T-RemoteUserFree, CCBS-T-Request, CCBS-T-Suspend and CCBS-T-Resume.

Annex A also identifies timers for the network side, including T-CCBS1 through T-CCBS6 and T-RETENTION. These timers are important because the service depends on defined waiting and retention periods, and implementers need to know which timers their product uses.

Related PICS requirements

Annex B links this PICS to other PICS proformas used for the basic call, the generic functional protocol and supplementary service interactions. It also shows the status of inherited items as conditional or optional, which tells the user of the form what must be answered in the base PICS proformas instead of being repeated here.

What terms does SIST ETS 300 359-2:1998 define?

• Protocol Implementation Conformance Statement (PICS) - A declaration by the supplier stating which capabilities are implemented for a given Open Systems Interconnection (OSI) protocol.
• PICS proforma - A questionnaire-style document that becomes the PICS when it is completed for a specific implementation or system.
• static conformance review - A comparison of the completed PICS with the static conformance requirements of the relevant standard.
• Implementation Under Test (IUT) - The implementation whose conformance is being described and assessed.
• System Under Test (SUT) - The system in which the IUT resides during conformance work.
• System Conformance Statement (SCS) - A document that summarizes which standards a system implements and claims conformance to.
• Digital Subscriber Signalling System No. one (DSS1) - The signalling protocol used here for CCBS on the ISDN user-network interface.
• Completion of Calls to Busy Subscriber (CCBS) - The supplementary service that lets a user request recall when the called party becomes available.

Who uses SIST ETS 300 359-2:1998?

SIST ETS 300 359-2:1998 is used by suppliers of ISDN user equipment and network equipment that claim conformance to ETS 300 359-1. It is also used by test laboratories, conformance engineers, quality managers and buyers who need a structured declaration of CCBS support.

In practice, the document helps people decide which parts of the CCBS service are implemented, which roles are supported, and which related basic call or supplementary service items must be completed in companion PICS forms.

What changed in SIST ETS 300 359-2:1998 from the previous edition?

SIST ETS 300 359-2:1998 is identified as identical to ETS 300 359-2 Edition 1.

Which standards are used with SIST ETS 300 359-2:1998?

• ETS 300 359-1 - The CCBS protocol specification that this PICS proforma applies to.
• ETS 300 102-1 - Basic call control at the ISDN user-network interface layer 3.
• ETS 300 195-1 - Protocol specification for supplementary service interactions.
• ETS 300 195-2 - PICS proforma for supplementary service interactions.
• ETS 300 196-1 - Generic functional protocol for the support of supplementary services.
• ETS 300 196-2 - PICS proforma for the generic functional protocol for supplementary services.
• I-ETS 300 314 - Basic call control PICS proforma for circuit-mode basic call control at basic access, user side.
• I-ETS 300 315 - Basic call control PICS proforma for circuit-mode basic call control at primary rate access, user side.
• ISO/IEC 9646-1 - General conformance testing concepts and framework, including the meaning of PICS.
• ISO/IEC 9646-7 - Guidance for implementation conformance statements and PICS proformas.
• CCITT Recommendation I.130 - Method for characterizing telecommunication services and network capabilities.
• ITU-T Recommendation I.411 - ISDN user-network reference configurations.

What does the SIST ETS 300 359-2:1998 document contain?

SIST ETS 300 359-2:1998 contains a completed-form structure rather than a protocol procedure description. Annex A gives the questionnaire, the completion instructions, and the tables for implementation identification, global conformance, roles, user items, network items, protocol data units, parameters, timers and call states.

The annex A tables are arranged so a supplier can mark supported and not supported items against references to ETS 300 359-1. Annex B then repeats selected requirements from the basic call, generic functional protocol and supplementary service interactions PICS so the CCBS form can be used together with related base proformas.

The document is therefore mainly a conformance-declaration tool for design review, implementation assessment and test preparation. It supports static conformance review and helps select test cases for optional functions and role-dependent behavior.

SLOVENSKI STANDARD
01-december-1998
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Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber
(CCBS) 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: ETS 300 359-2 Edition 1
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.

EUROPEAN ETS 300 359-2
TELECOMMUNICATION September 1995
STANDARD
Source: ETSI TC-SPS Reference: DE/SPS-05028-G
ICS: 33.080
ISDN, supplementary service, PICS
Key words:
Integrated Services Digital Network (ISDN);
Completion of Calls to Busy Subscriber (CCBS)
supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 2: Protocol Implementation Conformance Statement (PICS)
proforma specification
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
*
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 1995. All rights reserved.

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ETS 300 359-2: September 1995
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 359-2: September 1995
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions.8
4 Symbols and abbreviations .8
5 Conformance.9
Annex A (normative): PICS proforma.10
A.1 Instructions for completing the PICS proforma .10
A.1.1 Identification of the implementation .10
A.1.2 Global statement of conformance.10
A.1.3 Explanation of PICS proforma subclauses .10
A.1.4 Symbols, abbreviations and terms.11
A.2 Identification of the implementation.11
A.2.1 Implementation Under Test (IUT) identification .11
A.2.2 System Under Test (SUT) identification .11
A.2.3 Product supplier.12
A.2.4 Client.12
A.2.5 PICS contact person.13
A.3 PICS/System Conformance Statement (SCS).13
A.4 Identification of the protocol .13
A.5 Global statement of conformance .14
A.6 Roles .14
A.7 User.15
A.7.1 Major capabilities .15
A.7.2 Subsidiary Capabilities.15
A.7.3 Protocol data units .15
A.7.4 Protocol data unit parameters.16
A.7.5 Timers.17
A.7.6 Call States.17
A.8 Network .18
A.8.1 Major capabilities .18
A.8.2 Subsidiary capabilities.18
A.8.3 Protocol data units .18
A.8.4 Protocol data unit parameters.19
A.8.5 Timers.21
A.8.6 Call states .21

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ETS 300 359-2: September 1995
Annex B (normative): Requirements list . 22
B.1 User . 22
B.1.1 Requirements on items used in the basic call PICS . 22
B.1.2 Requirements on items used in the generic functional protocol PICS . 22
B.1.3 Requirements on items used in the supplementary service interactions PICS. 23
B.2 Network. 24
B.2.1 Requirements on items used in the basic call PICS . 24
B.2.2 Requirements on items used in the generic functional protocol PICS . 24
B.2.3 Requirements on items used in the supplementary service interactions PICS. 25
History. 26

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ETS 300 359-2: September 1995
Foreword
This European Telecommunication Standard (ETS) has been produced by the Signalling Protocols and
Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS 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) Completion of Calls to
Busy Subscriber (CCBS) 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: "TSS&TP specification for the network";
Part 6: "ATS and partial 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).
Transposition dates
Date of adoption of this ETS: 29 September 1995
Date of latest announcement of this ETS (doa): 31 December 1995
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 June 1996
Date of withdrawal of any conflicting National Standard (dow): 30 June 1996

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ETS 300 359-2: September 1995
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ETS 300 359-2: September 1995
1 Scope
This second part of ETS 300 359 is applicable to the stage three of the Completion of Calls to Busy
Subscriber (CCBS) 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 [12]) 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 [11]).
This ETS provides the Protocol Implementation Conformance Statement (PICS) proforma for the ISDN
DSS1 CCBS supplementary service protocol as specified in ETS 300 359-1 [8] in compliance with the
relevant requirements and in accordance with the relevant guidance given in ISO/IEC 9646-7 [10].
The supplier of a protocol implementation which is claimed to conform to ETS 300 359-1 [8] is required to
complete a copy of the PICS proforma provided in annex A of this ETS and is required to provide the
information necessary to identify both the supplier and the implementation.
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ETS 300 102-1: "Integrated Services Digital Network (ISDN); User-network
interface layer 3; Specifications for basic call control".
[2] ETS 300 195-1 (1995): "Integrated Services Digital Network (ISDN);
Supplementary service interactions; Digital Subscriber Signalling System No.
one (DSS1) protocol; Part 1: Protocol specification".
[3] ETS 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".
[4] ETS 300 196-1 (1993): "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".
NOTE: ETS 300 196-1 (1993) was initially published as ETS 300 196 (1993).
[5] ETS 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".
[6] I-ETS 300 314 (1994): "Integrated Services Digital Network (ISDN); Digital
Subscriber Signalling System No. one (DSS1); Protocol Implementation
Conformance Statement (PICS) proforma specification for the network layer
signalling protocol for circuit-mode basic call control (basic access, user)".
[7] I-ETS 300 315 (1994): "Integrated Services Digital Network (ISDN); Digital
Subscriber Signalling System No. one (DSS1); Protocol Implementation
Conformance Statement (PICS) proforma specification for the network layer
signalling protocol for circuit-mode basic call control (primary rate access,
user)".
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ETS 300 359-2: September 1995
[8] ETS 300 359-1 (1995): "Integrated Services Digital Network (ISDN); Completion
of Calls to Busy Subscriber (CCBS) supplementary service; Digital Subscriber
Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[9] ISO/IEC 9646-1: "Information technology - Open systems interconnection -
Conformance testing methodology and framework - Part 1: General concepts".
[10] ISO/IEC 9646-7: "Information technology - Open systems interconnection -
Conformance testing methodology and framework - Part 7: Implementation
Conformance Statements".
[11] CCITT Recommendation I.130 (1988): "Method for the characterization of
telecommunication services supported by an ISDN and network capabilities of
an ISDN".
[12] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces -
Reference configurations".
3 Definitions
For the purposes of this ETS, the following definitions apply, in addition to those given in
ETS 300 359-1 [8]:
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 [9]).
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 [9]).
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 [9]).
4 Symbols and abbreviations
For the purposes of this ETS, the following abbreviations apply:
AND Boolean "and"
C Conditional requirement (to be observed if the relevant conditions apply)
CCBS Completion of Calls to Busy Subscriber
DSS1 Digital Subscriber Signalling System No. one
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
MT Messages Transmitted
N/A Not applicable, not supported or the conditions for status are not met
No not supported
NOT Boolean "not"
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ETS 300 359-2: September 1995
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
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 ETS 300 359-1 [8];
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.

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ETS 300 359-2: September 1995
Annex A (normative): PICS proforma
Notwithstanding the provisions of the copyright clause related to the text of this ETS, ETSI grants that
users of this ETS 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 [9] 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 (RL) contained in annex B. This provides the additional
restrictions placed on the related proforma (different conditions, different status, etc.).

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ETS 300 359-2: September 1995
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 [10].
The reference column contained in the tables gives reference to the appropriate part(s) of
ETS 300 359-1 [8] 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
ETS 300 359-1 [8] 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 [10], 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 [10], 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:
.........................................................................................................................................................................
.........................................................................................................................................................................
Hardware configuration:
.........................................................................................................................................................................
.........................................................................................................................................................................
.........................................................................................................................................................................
Operating system:
.........................................................................................................................................................................
.........................................................................................................................................................................

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ETS 300 359-2: September 1995
A.2.3 Product supplier
Name:
........................................................................................................................................................................
Address:
........................................................................................................................................................................
........................................................................................................................................................................
........................................................................................................................................................................
Telephone number:
........................................................................................................................................................................
Facsimile number:
........................................................................................................................................................................
Additional information:
........................................................................................................................................................................
........................................................................................................................................................................
........................................................................................................................................................................
A.2.4 Client
Name:
........................................................................................................................................................................
Address:
........................................................................................................................................................................
........................................................................................................................................................................
........................................................................................................................................................................
Telephone number:
........................................................................................................................................................................
Facsimile number:
........................................................................................................................................................................
Additional information:
........................................................................................................................................................................
........................................................................................................................................................................
........................................................................................................................................................................

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ETS 300 359-2: September 1995
A.2.5 PICS contact person
Name:
.........................................................................................................................................................................
Address:
......................................................................................................................................................................
...