SIST EN 301 815-4 V1.1.1:2005

• Abstract:

  Test specification of the protocol.

• Status: Published
• Publication Date: 31-Dec-2004
• 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-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Ref Project: ETSI EN 301 815-4 V1.1.1 (2002-10) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Quality of Service class and parameters indication at call/connection establishment; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user

SIST EN 301 815-4 V1.1.1:2005 is the Slovenian adoption of ETSI EN 301 815-4 V1.1.1 for Broadband Integrated Services Digital Network (B-ISDN) Digital Subscriber Signalling System No. two (DSS2) support of Quality of Service class and parameters indication at call/connection establishment. It specifies the user-side Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for conformance testing at the TB, or coincident SB and TB, reference point. Test laboratories, protocol implementers and clients use it to prepare, run and record protocol conformance tests.

What does SIST EN 301 815-4 V1.1.1:2005 specify?

SIST EN 301 815-4 V1.1.1:2005 specifies the user ATS for implementations that conform to EN 301 815-1 at the TB reference point, or at coincident SB and TB reference point. It is a test specification, not the protocol definition itself, and it is paired with a partial PIXIT proforma for setting up test campaigns.

The document is organized into clauses on scope, references, definitions and abbreviations, the abstract test method, untestable test purposes, the ATS-to-TP map, and conformance requirements for PCTR, PIXIT and ATS. It then provides annexes for the PCTR proforma, the partial PIXIT proforma, the ATS, and a bibliography.

Annex	What it covers
Annex A	Normative Protocol Conformance Test Report (PCTR) proforma
Annex B	Normative partial PIXIT proforma
Annex C	Normative Abstract Test Suite (ATS)
Annex D	Informative bibliography

What are the key requirements of SIST EN 301 815-4 V1.1.1:2005?

SIST EN 301 815-4 V1.1.1:2005 is built around remote conformance testing of the user side, with clear rules for how test evidence is collected and reported. In practice, this tells a test lab where to observe behavior, what to document, and how to turn the abstract tests into an executable campaign.

Remote test method and observation point

Clause 4 says the user ATS uses the remote test method. The Point of Control and Observation (PCO) is named L0 and sits at the service access point between layers 2 and 3. This matters because verdicts are based on what the tester can see at that interface, not on internal implementation details.

Clause 4 also introduces an additional informal PCO called O for test coordination above the IUT. O is used to describe control actions, but not to assign verdicts, which helps the test cases state clearly what the operator must do.

Test coverage and mapping

Clause 5 states that there are no untestable test purposes associated with this ATS. Clause 6 gives a one-to-one mapping between test purpose identifiers and test case names. For users of the suite, this makes traceability straightforward: each stated purpose corresponds directly to a test case.

Reporting and proformas

Clause 7 requires PCTR reporting to follow the ISO/IEC 9646-5 template and the PCTR proforma in Annex A. Clause 8 requires PIXIT material to conform to Annex B when preparing the Means Of Testing (MOT) and the test laboratory setup. This means the lab must complete the right forms for the IUT, the test environment and the campaign record.

Executable test suite conformance

Clause 9 states that a test realizer must comply with ISO/IEC 9646-4 when producing the MOT and Executable Test Suite (ExTS). The ExTS must be technically equivalent to the ATS in Annex C, and all abstract test events must be realizable in executable form. In practice, this limits deviations during test tool development and keeps the executable suite aligned with the published ATS.

PIXIT items that must be prepared

Annex B collects the practical test setup data needed before testing. It includes test management timers such as T308, TAC, TNOAC and TWAIT, plus parameter values for items like Bearer capability, Called party number, ATM traffic descriptor, Quality of service, End-to-end transit delay, Extended Quality of service, preferred VPCI and preferred VCI. These values are what the lab needs to configure valid incoming-call tests and rejection tests.

What terms does SIST EN 301 815-4 V1.1.1:2005 define?

• Abstract Test Suite (ATS) - The collection of abstract test cases and related information used to assess protocol conformance.
• Protocol Implementation eXtra Information for Testing (PIXIT) - Implementation-specific information that a test lab needs to prepare and run the test suite.
• Protocol Conformance Test Report (PCTR) - The report form used to record the result of a conformance test campaign.
• Implementation Under Test (IUT) - The implementation whose protocol behavior is being assessed.
• System Under Test (SUT) - The broader system or configuration that contains the IUT during testing.
• Point of Control and Observation (PCO) - The point where the tester controls and observes protocol behavior.
• Tree and Tabular Combined Notation (TTCN) - The notation used to express the ATS in Annex C.

Who uses SIST EN 301 815-4 V1.1.1:2005?

SIST EN 301 815-4 V1.1.1:2005 is used by conformance test laboratories, test realisers, and protocol implementers working on B-ISDN DSS2 user-side equipment. It is also useful for clients of test laboratories and quality or compliance teams that need to define the test setup, complete PIXIT data, and review the resulting PCTR.

In practice, these users apply the standard to prepare test configurations, select timers and parameter values, execute ATS test cases, and document whether an IUT conforms to EN 301 815-1.

Which standards are used with SIST EN 301 815-4 V1.1.1:2005?

• ETSI EN 301 815-1 - Defines the DSS2 protocol being tested.
• ETSI EN 301 815-2 - Provides the PICS proforma used with the protocol specification.
• ISO/IEC 9646-1 - Gives the general conformance testing concepts and terms.
• ISO/IEC 9646-2 - Defines the abstract test suite specification framework and the remote test method concepts used here.
• ISO/IEC 9646-3 - Defines TTCN, the notation used for the ATS.
• ISO/IEC 9646-4 - Covers test realization and the creation of executable test suites.
• ISO/IEC 9646-5 - Sets requirements for test laboratories and clients in conformance assessment.
• ITU-T Recommendation I.413 - Defines the B-ISDN user-network interface reference points.
• ETSI EN 300 443-1 - Provides the related B-ISDN user-network interface layer 3 basic call/bearer control protocol specification.
• ETSI EN 300 443-2 - Provides the related PICS proforma reference used in Annex B.

What does the document contain?

SIST EN 301 815-4 V1.1.1:2005 contains a normative PCTR proforma, a normative partial PIXIT proforma, and a normative ATS written in TTCN. Annex A structures the conformance report into identification summary, static and dynamic summaries, campaign results, and observations.

Annex B contains the fields needed to describe the test laboratory, client, SUT, protocol identification, configuration to be tested, timers, and parameter values. Annex C provides the ATS in both TTCN graphical form and machine-processable form, with the two forms stated to be equivalent.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VWUDNWQLBroadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Quality of Service class and parameters indication at call/connection establishment; 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 301 815-4 Version 1.1.1SIST EN 301 815-4 V1.1.1:2005en01-januar-2005SIST EN 301 815-4 V1.1.1:2005SLOVENSKI
STANDARD
ETSI ETSI EN 301 815-4 V1.1.1 (2002-10) 2
Reference DEN/SPAN-130251-4 Keywords ATS, B-ISDN, DSS2, PIXIT, quality, 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 301 815-4 V1.1.1:2005

ETSI ETSI EN 301 815-4 V1.1.1 (2002-10) 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 301 815-1.7 3.2 Abbreviations.8 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 301 815-4 V1.1.1:2005

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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 Digital Subscriber Signalling System No. two (DSS2) protocol specification for the Broadband Integrated Services Digital Network (B-ISDN) to support Quality of Service class and parameters indication at call/connection establishment, as identified below: Part 1: "Protocol specification [ITU-T Recommendations Q.2965.1 (1999) and Q.2965.2 (1999), modified]"; Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification [ITU-T Recommendations Q.2965.1B (2000) and Q.2965.2B (2000), modified]"; 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: 11 October 2002 Date of latest announcement of this EN (doa): 31 January 2003 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 July 2003 Date of withdrawal of any conflicting National Standard (dow): 31 July 2003
ETSI ETSI EN 301 815-4 V1.1.1 (2002-10) 6
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 Broadband Integrated Services Digital Network (B-ISDN) Digital Subscriber Signalling System No. two (DSS2) protocol specification for support of Quality of Service Class and parameters indication at call/connection establishment defined in EN 301 815-1 [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 301 815-1 [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 301 815-1: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Quality of Service Class and parameters indication at call/connection establishment; Part 1: Protocol specification [ITU-T Recommendations Q.2965.1 (1999) and Q.2965.2 (1999), modified]". [2] ETSI EN 301 815-2: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Quality of Service class and parameters indication at call/connection establishment; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification [ITU-T Recommendations Q.2965.1B (2000) and Q.2965.2B (2000), modified]". [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 301 815-4 V1.1.1:2005

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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 301 815-1 [1], EN 300 443-1 [7] and the following apply. 3.1.1 Definitions related to conformance testing Abstract test case: Refer to ISO/IEC 9646-1 [3]. Abstract Test Method (ATM): Refer to ISO/IEC 9646-1 [3]. Abstract Test Suite (ATS): Refer to ISO/IEC 9646-1 [3]. Implementation Under Test (IUT): Refer to ISO/IEC 9646-1 [3]. System Under Test (SUT): Refer to ISO/IEC 9646-1 [3]. Upper Tester (UT): Refer to ISO/IEC 9646-1 [3]. Lower Tester (LT): Refer to ISO/IEC 9646-1 [3]. Protocol Implementation Conformance Statement (PICS): Refer to ISO/IEC 9646-1 [3]. PICS proforma: Refer to ISO/IEC 9646-1 [3]. Protocol Implementation eXtra Information for Testing (PIXIT): Refer to ISO/IEC 9646-1 [3]. PIXIT proforma: Refer to ISO/IEC 9646-1 [3]. Test Purpose (TP): Refer to ISO/IEC 9646-1 [3]. Point of Control and Observation (PCO): Refer to ISO/IEC 9646-1 [3]. 3.1.2 Definitions related to EN 301 815-1 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) SIST EN 301 815-4 V1.1.1:2005

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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 IUT Implementation Under Test LT Lower Tester
MOT Means Of Testing PCO Point of Control and Observation PICS Protocol Implementation Conformance Statement PIXIT Protocol Implementation eXtra Information for Testing SUT System Under Test TP Test Purpose TSS Test Suite Structure TTCN Tree and Tabular Combined Notation UT Upper Tester 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 301 815-4 V1.1.1:2005

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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 to the verdict assignment for each test case. Test laboratories running conformance test services using this ATS shall comply with ISO/IEC 9646-5 [9]. A test laboratory which claims to conform to this ATS specification shall use an MOT which conforms to this ATS. SIST EN 301 815-4 V1.1.1:2005

ETSI ETSI EN 301 815-4 V1.1.1 (2002-10) 10 Annex A (normative): Protocol Conformance Test Report (PCTR) proforma Notwithstanding the provisions of the copyright clause related to the text of the present documen
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