SIST EN 301 068-4 V1.2.1:2003

• Abstract:

  Upgrade of test specification

• Status: Published
• Publication Date: 31-Oct-2003
• 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-Nov-2003
• Due Date: 01-Nov-2003
• Completion Date: 01-Nov-2003
• Ref Project: ETSI EN 301 068-4 V1.2.1 (2002-08) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user

SIST EN 301 068-4 V1.2.1:2003 is the Slovenian adoption of the ETSI standard for conformance testing of the user side of Broadband Integrated Services Digital Network (B-ISDN) DSS2 signalling for ATM transfer capability and traffic parameter indication. It specifies the user Abstract Test Suite (ATS) and a partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for implementations at the TB reference point or coincident SB and TB reference point.

What does SIST EN 301 068-4 V1.2.1:2003 specify?

SIST EN 301 068-4 V1.2.1:2003 specifies how to test user-side implementations of the EN 301 068-1 protocol for the B-ISDN user-network layer 3 function. It is a conformance-testing document: it gives the ATS, the related test purposes, and the PIXIT information needed to prepare testing.

The document is organized into clauses 1 to 9 and four annexes. Clause 4 describes the abstract test method, clauses 5 to 9 cover test purpose mapping and conformance rules, and annexes A to C contain the proformas and ATS material.

Annex	What it covers
Annex A	Protocol Conformance Test Report (PCTR) proforma
Annex B	Partial PIXIT proforma
Annex C	Abstract Test Suite (ATS)
Annex D	Bibliography

What are the key requirements of SIST EN 301 068-4 V1.2.1:2003?

• Clause 4 uses the remote test method. The Point of Control and Observation (PCO) is at the service access point between layers 2 and 3, and it is named L0. In practice, this means testing is driven from the outside of the implementation while verdicts are based on what is seen at that interface.

• Clause 4 also uses an additional informal PCO called O. O supports test coordination between the System Under Test (SUT) upper layers and the Lower Tester (LT), but it is not used for verdicts. In practice, it helps describe operator actions clearly during test setup and execution.

• Clause 5 states that there are no untestable test purposes. That means the ATS is written so that the defined test purposes are intended to be executable and assessable.

• Clause 6 gives a one-to-one mapping from test purposes to test cases. The identifiers used for the test purposes are reused as test case names. In practice, this makes it easier to trace a failed test back to the exact purpose it checks.

• Clause 7 defines PCTR conformance. A test laboratory producing a Protocol Conformance Test Report (PCTR) shall use the annex A proforma, and the report shall preserve the order and content structure of that annex. This matters when a lab needs a report that matches the standard format for customers or audits.

• Clause 8 defines PIXIT conformance. A test realizer and test laboratory shall augment the partial PIXIT proforma so it becomes technically equivalent to annex B. In practice, this collects the implementation-specific details needed to prepare the Means Of Testing (MOT) for a particular Implementation Under Test (IUT).

• Clause 9 defines ATS conformance. An Executable Test Suite (ExTS) shall be technically equivalent to the ATS in annex C, and the MOT shall conform to the ATS requirements. This is the basis for turning the abstract test design into an executable test system.

What terms does SIST EN 301 068-4 V1.2.1:2003 define?

• Abstract Test Suite (ATS) - The set of abstract test cases and test structure used to assess conformance.
• Implementation Under Test (IUT) - The protocol implementation being checked against the specification.
• System Under Test (SUT) - The overall system or configuration that includes the IUT during testing.
• Protocol Implementation Conformance Statement (PICS) - The declaration of what a product supports for conformance assessment.
• Protocol Implementation eXtra Information for Testing (PIXIT) - The extra implementation details needed to set up and run tests.
• Point of Control and Observation (PCO) - The test interface where the tester controls and observes behaviour.
• Upper Tester (UT) and Lower Tester (LT) - The tester roles above and below the IUT used in conformance testing.

Who uses SIST EN 301 068-4 V1.2.1:2003?

SIST EN 301 068-4 V1.2.1:2003 is used by conformance test laboratories, test realizers, and implementers of B-ISDN DSS2 user-side equipment. It is also relevant to clients requesting testing, because it defines the PCTR and PIXIT information that must be completed for a test campaign.

In practice, users apply it when preparing an MOT, building an ExTS, filling in PIXIT details, and documenting test results for user-side ATM transfer capability and traffic parameter indication.

Which standards are used with SIST EN 301 068-4 V1.2.1:2003?

The document relies on EN 301 068-1 for the protocol specification and on EN 301 068-2 for the PICS proforma. It also refers to EN 300 443-1 and EN 300 443-2 for related B-ISDN user-network interface material.

Its conformance-testing framework is based on ISO/IEC 9646-1, ISO/IEC 9646-2, ISO/IEC 9646-3, ISO/IEC 9646-4, and ISO/IEC 9646-5. ITU-T Recommendation I.413 provides the B-ISDN user-network interface reference point definition used by the test method.

What does the SIST EN 301 068-4 V1.2.1:2003 document contain?

Annex A contains a PCTR proforma with identification data, IUT identification, testing environment, static and dynamic conformance summaries, and a test campaign report table. That is the part a lab uses to record results and observations in a standard format.

Annex B contains the partial PIXIT proforma for the test laboratory, client, SUT, protocol identification, test configuration, timers, and parameter values. It captures the implementation-specific values needed to run the ATS.

Annex C contains the ATS in Tree and Tabular Combined Notation (TTCN), in both graphical form (TTCN.GR) and machine-processable form (TTCN.MP). Clause 4 also includes a figure for the remote test method, which explains the test setup used by the ATS.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 068-4 Version 1.2.1SIST EN 301 068-4 V1.2.1:2003en01-november-2003SIST EN 301 068-4 V1.2.1:2003SLOVENSKI
STANDARD
ETSI ETSI EN 301 068-4 V1.2.1 (2002-08) 2
Reference REN/SPAN-130275-4 Keywords ATM, ATS, B-ISDN, DSS2, layer 3, PIXIT, UNI, user ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: [phone]
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Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: [e-mail] 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 2002. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 301 068-4 V1.2.1:2003

ETSI ETSI EN 301 068-4 V1.2.1 (2002-08) 3
Contents Intellectual Property Rights.5 Foreword.5 1 Scope.6 2 References.6 3 Definitions and abbreviations.7 3.1 Definitions.7 3.1.1 Definitions related to conformance testing.7 3.1.2 Definitions related to EN 301 068-1.7 3.2 Abbreviations.7 4 Abstract Test Method (ATM).8 5 Untestable Test Purposes.8 6 ATS to TP map.8 7 PCTR conformance.9 8 PIXIT conformance.9 9 ATS Conformance.9 Annex A (normative): Protocol Conformance Test Report (PCTR) proforma.10 A.1 Identification summary.10 A.1.1 Protocol conformance test report.10 A.1.2 IUT identification.10 A.1.3 Testing environment.10 A.1.4 Limits and reservations.11 A.1.5 Comments.11 A.2 IUT Conformance status.11 A.3 Static conformance summary.11 A.4 Dynamic conformance summary.11 A.5 Static conformance review report.12 A.6 Test campaign report.12 A.7 Observations.13 Annex B (normative): Partial PIXIT proforma.14 B.1 Identification summary.14 B.2 Abstract test suite summary.14 B.3 Test laboratory.14 B.4 Client (of the Test Laboratory).15 B.5 SUT.15 B.6 Protocol information.16 B.6.1 Protocol identification.16 B.6.2 Configuration to be tested.16 B.6.3 Test management timers.16 B.6.4 Parameter Values.17 Annex C (normative): Abstract Test Suite (ATS).18 SIST EN 301 068-4 V1.2.1:2003

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C.1 The TTCN Graphical form (TTCN.GR).18 C.2 The TTCN Machine Processable form (TTCN.MP).18 Annex D (informative): Bibliography.19 History.20
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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 ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). 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 ETSI 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 Services and Protocols for Advanced Networks (SPAN). The present document is part 4 of a multi-part deliverable covering the Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. 2 (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication, as identified below: Part 1: "Protocol specification [ITU-T Recommendations Q.2961.1 (1995), Q.2961.2 (1997), Q.2961.3 (1997), Q.2961.4 (1997), Q.2961.6 (1998), modified]"; 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".
National transposition dates Date of adoption of this EN: 2 August 2002 Date of latest announcement of this EN (doa): 30 November 2002 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 May 2003 Date of withdrawal of any conflicting National Standard (dow): 31 May 2003
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1 Scope The present document specifies the user Abstract Test Suite (ATS) for the TB reference point or coincident SB and TB reference point (as defined in ITU-T Recommendation I.413 [6]) of implementations conforming to the standards for the signalling user-network layer 3 specification for ATM transfer capability and traffic parameter indication of the Digital Subscriber Signalling System No. two (DSS2) protocol for the pan-European Broadband Integrated Services Digital Network (B-ISDN), EN 301 068-1 [1]. A further part of the present document specifies the Test Suite Structure and Test Purposes (TSS&TP) related to this ATS and partial PIXIT proforma. Other parts specify the TSS&TP and the ATS and partial PIXIT proforma for the Network side of the TB reference point or coincident SB and TB reference point of implementations conforming to EN 301 068-1 [1]. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. [1] ETSI EN 301 068-1: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication; Part 1: Protocol specification [ITU-T Recommendations Q.2961.1 (1995), Q.2961.2 (1997), Q.2961.3 (1997), Q.2961.4 (1997) and Q.2961.6 (1997), modified]". [2] ETSI EN 301 068-2: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification". [3] ISO/IEC 9646-1: "Information technology; Open Systems Interconnection; Conformance testing methodology and framework; Part 1: General concepts". [4] ISO/IEC 9646-2: "Information technology; Open Systems Interconnection; Conformance testing methodology and framework; Part 2: Abstract Test Suite specification". [5] ISO/IEC 9646-3: "Information technology; Open Systems Interconnection; Conformance testing methodology and framework; Part 3: The Tree and Tabular Combined Notation (TTCN)". [6] ITU-T Recommendation I.413 (1993): "B-ISDN user-network interface". [7] ETSI EN 300 443-1: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Part 1: Protocol specification [ITU-T Recommendation Q.2931 (1995), modified]". [8] ISO/IEC 9646-4: "Information technology; Open Systems Interconnection; Conformance testing methodology and framework; Part 4: Test realization". [9] ISO/IEC 9646-5: "Information technology; Open Systems Interconnection; Conformance testing methodology and framework; Part 5: Requirements on test laboratories and clients for the conformance assessment process". SIST EN 301 068-4 V1.2.1:2003

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[10] ETSI EN 300 443-2: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Parts 2: Protocol Implementation Conformance Statement (PICS) proforma specification". 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in EN 301 068-1 [1], EN 300 443-1 [7] and the following apply: 3.1.1 Definitions related to conformance testing Abstract test case: See ISO/IEC 9646-1 [3]. Abstract Test Method (ATM): See ISO/IEC 9646-1 [3]. Abstract Test Suite (ATS): See ISO/IEC 9646-1 [3]. Implementation Under Test (IUT): See ISO/IEC 9646-1 [3]. System Under Test (SUT): See ISO/IEC 9646-1 [3]. Upper Tester (UT): See ISO/IEC 9646-1 [3]. Lower Tester (LT): See ISO/IEC 9646-1 [3]. Protocol Implementation Conformance Statement (PICS): See ISO/IEC 9646-1 [3]. PICS proforma: See ISO/IEC 9646-1 [3]. Protocol Implementation eXtra Information for Testing (PIXIT): See ISO/IEC 9646-1 [3]. PIXIT proforma: See ISO/IEC 9646-1 [3]. Test Purpose (TP): See ISO/IEC 9646-1 [3]. Point of Control and Observation (PCO): See ISO/IEC 9646-1 [3]. 3.1.2 Definitions related to EN 301 068-1 user: DSS2 protocol entity at the User side of the user-network interface where a TB reference point or coincident SB and TB reference point applies user (SB/TB): DSS2 protocol entity at the User side of the user-network interface where a coincident SB and TB reference point applies user (TB): DSS2 protocol entity at the User side of the user-network interface where a TB reference point applies (user is a private ISDN) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ATM Abstract Test Method ATS Abstract Test Suite B-ISDN Broadband Integrated Services Digital Network
DSS2 Digital Subscriber Signalling System No. two ExTS Executable Test Suite SIST EN 301 068-4 V1.2.1:2003

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IUT Implementation Under Test LT Lower Tester
MOT Means Of Testing PCO Point of Control and Observation PCTR Protocol Conformance Test Report PICS Protocol Implementation Conformance Statement PIXIT Protocol Implementation eXtra Information for Testing SCTR System Conformance Test Report SUT System Under Test TCP Termination Connection Point TP Test Purpose TSS Test Suite Structure TTCN Tree and Tabular Combined Notation UT Upper Tester U0 Null link state U7 Call Received link state VCI Virtual Channel Identifier VPCI Virtual Path Connection Identifier 4 Abstract Test Method (ATM) The remote test method is applied for the user ATS. The Point of Control and Observation (PCO) resides at the service access point between layers 2 and 3. This PCO is named "L0" (for Lower). The L0 PCO is used to control and observe the behaviour of the Implementation Under Test (IUT) and test case verdicts are assigned depending on the behaviour observed at this PCO. Tester
SUT LT
IUT
PCO
Layer 2
Layer 2 Layer 1
Layer 1 Service provider
Figure 1: Remote test method ISO/IEC 9646-2 [4] allows the informal expression of Test Co-ordination Procedures (TCP) between the System Under Test (SUT) upper layer(s) and the Lower Tester (LT). In the ATS contained in annex C, TCP is achieved by use of a second "informal" PCO, called "O" (for Operator). This PCO is used to specify control but not observation above the IUT and consequently, events at this PCO are never used to generate test case verdicts. The use of this O PCO is regarded as a preferred alternative to the use of the implicit send event, in that it allows the ATS to specify in a clear and meaningful way what actions are required to be performed on the IUT. 5 Untestable Test Purposes There are no untestable test purposes associated with this ATS. 6 ATS to TP map The identifiers used for the TPs are reused as test case names. Thus there is a straightforward one-to-one mapping. SIST EN 301 068-4 V1.2.1:2003

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7 PCTR conformance A test laboratory, when requested by a client to produce a PCTR, is required, as specified in ISO/IEC 9646-5 [9], to produce a PCTR conformant with the PCTR template given in annex B of ISO/IEC 9646-5 [9]. Furthermore, a test laboratory, offering testing for the ATS specification contained in annex C, when requested by a client to produce a PCTR, is required to produce a PCTR conformant with the PCTR proforma contained in annex A of the present document. A PCTR which conforms to this PCTR proforma specification shall preserve the content and ordering of the clauses contained in annex A. Clause A.6 of the PCTR may contain additional columns. If included, these shall be placed to the right of the existing columns. Text in italics may be retained by the test laboratory. 8 PIXIT conformance A test realizer, producing an executable test suite for the Abstract Test Suite (ATS) specification contained in annex C, is required, as specified in ISO/IEC 9646-4 [8], to produce an augmented partial PIXIT proforma conformant with this partial PIXIT proforma specification. An augmented partial PIXIT proforma which conforms to this partial PIXIT proforma specification shall, as a minimum, have contents which are technically equivalent to annex B. The augmented partial PIXIT proforma may contain additional questions that need to be answered in order to prepare the Means Of Testing (MOT) for a particular Implementation Under Test (IUT). A test laboratory, offering testing for the ATS specification contained in annex C, is required, as specified in ISO/IEC 9646-5 [9], to further augment the augmented partial PIXIT proforma to produce a PIXIT proforma conformant with this partial PIXIT proforma specification. A PIXIT proforma which conforms to this partial PIXIT proforma specification shall, as a minimum, have contents which are technically equivalent to annex B. The PIXIT proforma may contain additional questions that need to be answered in order to prepare the test laboratory for a particular IUT. 9 ATS Conformance The test realizer, producing a Means Of Testing (MOT) and Executable Test Suite (ExTS) for this Abstract Test Suite (ATS) specification, shall comply with the requirements of ISO/IEC 9646-4 [8]. In particular, these concern the realization of an Executable Test Suite (ExTS) based on each ATS. The test realizer shall provide a statement of conformance of the MOT to this ATS specification. An ExTS which conforms to this ATS specification shall contain test groups and test cases which are technically equivalent to those contained in the ATS in annex C. All sequences of test events comprising an abstract test case shall be capable of being realized in the executable test case. Any further checking which the test system might be capable of performing is outside the scope of this ATS specification and shall not contribute
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