ITU-T Q 933 BIS-1995 Abstract Test Suite for Digital Subscriber Signalling System No 1 (DSS 1) - Signalling Specification for Frame Mode Basic Call Control Conformance Testing for to .pdf

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1、ITU-T RECMNaQ.933 BIS 95 48b2591 Ob12278 5Tb 9 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.933 bis (1 0/95) DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 ABSTRACT TEST SUITE FOR DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 FOR FRAME MODE BASIC CALL CONTRO

2、L CONFORMANCE TESTING FOR PERMANENT VIRTUAL CONNECTIONS (PVCs) (ANNEX A TO RECOMMENDATION Q.933) (DSS 1) - SIGNALLING SPECIFICATION ITU-T Recommendation Q.933 bis (Previously “CCIlT Recommendation”) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handli

3、ng ServicesITU-T RECMNMQ.933 BIS 95 m 4862593 Ob32279 432 m FOREWORD The ITU-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (IT). The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommen- dati

4、ons on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The

5、 approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). ITU-T Recommendation 4.933 bis was prepared by ITU-T Study Group 11 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 17th

6、 of October 1995. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O IT 1996 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any

7、 means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMNMQ-933 BIS 75 = 4862571 Ob12280 154 W SUMMARY This Recommenda

8、tion defines the Abstract Test Suites applicable to User and Network sides Basic access and Primary Rate access for the Permanent Virtual Connection status signalling procedures defined in Annex NQ.933. It also includes the Protocol Implementation extra Information for Testing (PIXIT) proforma, NOTE

9、 - The ATSs and the PIXiTs are available in software format only. Recommendation Q.933 bis (10/95) i COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMN*Q.933 BIS 95 48b2.591 0612281 090 COPYRIGHT International Telecommunication

10、s Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMN*Q=933 BIS 95 4862593 Ob32282 T27 W Recommendation Q.933 bis1) ABSTRACT TEST SUITE FOR DIGITAL SUBSCRIBER SIGNALLING MODE BASIC CALL CONTROL CONFORMANCE TESTING FOR PERMANENT VIRTUAL CONNECTIONS (PVC) (ANNEX A TO RECOM

11、MENDATION Q.933) (Geneva. 1995) SYSTEM NO . 1 SS 1) . SIGNALLING SPECIFICATION FOR FRAME CONTENTS 1 Introduction 1.1 Introduction II.1 Introduction II . 1.1 Scope and field of application . II.1.2 References . II.1.3 Definitions . II.2 General aspects . II.2.1 Test group and subgroups . II.2.2 Pream

12、ble . II.2.3 Test body . 11.2.4 Postamble II.2.5 Timer definitions . II.2.6 PICSPIXIT relationship to abstract test suite II.2.7 PEUT proforma II.2.8 Test case selection . II.3 Abbreviations III.1 Introduction IV.l Introduction SECTION I . 4.933 ABSTRACT TEST SUITE . SECTION II . 4.933, ANNEX A ABST

13、RACT TEST SUITE SECTION III - 4.933, ANNEX B ABSTRACT TEST SUITE! . SECTION JS - Q.933, ANNEX C ABSTRACT TEST SUI. . Page 2 2 2 2 2 3 3 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 ) Only the Introduction. General aspects and Abbreviations. sections of this Recommendation are available in printed form . All other

14、sections. including the ATS. are available in electronic format Le . diskette only . Recommendation Q.933 bis (10/95) 1 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMN*Q-933 BIS 95 4862593 0632283 963 ABSTRACT TEST SUITE FOR

15、 DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO. 1 (DSS1) - SIGNALLING SPECIFICATION FOR FRAME MODE BASIC CALL CONTROL CONFORMANCE TESTING FOR PERMANENT VIRTUAL CONNECTIONS (PVCs) (ANNEX A TO RECOMMENDATION Q.933) 1 Introduction This Recommendation consists of four sections as follows: 0 Section I - 4.933

16、Abstract Test Suite. 0 0 Section II - Q.933, Annex A Abstract Test Suite. Section ID - Q.933, Annex B Abstract Test Suite. Section V - Q.933, Annex C Abstract Test Suite. SECTION I - Q.933 ABSTRACT TEST SUITE Digital Subscriber Signalling System No. 1 (DSS 1) - Signalling Specification for Frame Mod

17、e Basic Call Control Conformance Testing User and Network Sides of User-Network Interface and Network-Network Interface 1.1 Introduction Theso Abstract Test Suites for both user and network side are the subject of further study. SECTION II - Q.933, ANNEX A ABSTRACT TEST SUITE Additional Procedures f

18、or Permanent Virtual Connections (PVCs) Using Unnumbered Information Frames User and Network Sides of User-Network Interface and Network-Network Interface 11.1 Introduction This Recommendation presents the Abstract Test Suite (ATS) for Digital Subscriber Signalling System No. 1 (DSS i), Additional P

19、rocedures for Permanent Virtual Connections (PVCs) Using Unnumbered Information Frames (Annex NQ.933) described in Tree and Tabular Combined Notation (TCN). This Recommendation aligns with the principles defined in OS1 Conformance Testing Methodology and Framework Recommendations X.290 to X.294, inc

20、lusive i. 2 Recommendation Q.933 bis (10/95) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMNxQ.933 BIS 95 m 4862591 Ob32284 8TT m The PICS documents are documented in annexes of Recommendation Q.933 4 and are used in the abs

21、tract test suite for test selection (see II.2.6). Subclause II.l.l describes the scope and field of application which provides an objective basis for the applicability of the tests. Clause II.2 contains general aspects of testing and the Protocol Implementation extra Information for Testing (PIXIT)

22、proforma. Clause II.3 contains abbreviations used in this Recommendation. The type of ITCN used in the development of the test suite may be found in Recommendation X.292 i. II.l.l The abstract test suite for conformance testing is based on Annex NQ.933 2 for Additional Procedures for Permanent Virtu

23、al Connections (PVCs) using Unnumbered Information Frames. The Implementation Under Test (TUT) is the implementation of Annex NQ.933. The System Under Test (SUT) is functionally a Terminal Equipment of Type 1 (TEl), a Terminal Adapter (TA) or a Network Termination of type two (NT2). The test methodo

24、logy is the “layer embedded testing” as described in Recommendation X.29 1 i. It is possible that the entire test suite is not applicable for all IUTs. A test selection procedure has to be performed to determine the applicability of a test to a particular IUT. Such selection shall be based on the Pr

25、otocol Implementation Conformance Statement (PICS) and Protocol Implementation extra Information for Testing (PWT). The abstract test cases contained in this Recommendation are a comprehensive reflection of the base standards. This test suite tests that the IUT does not violate any of the procedures

26、 of Annex NQ.933 2. The preferred use of this suite is under conditions where the only messages that are sent across the interface are those in response to events in the test cases themselves. In order to allow for conditions where the SUT might send extraneous messages, the design of the suite is s

27、uch that the verdict will not be affected by the receipt of these messages. The conformance testing for Annex NQ.933, Additional Procedures for Permanent Virtual Connections (PVCs) Using Unnumbered Information Frames protocol is covered in two abstract test suites, presented below. Scope and field o

28、f application II.l.l.l User-Network Interface The abstract test suite for conformance testing equipment for both the user-side and the network-side of the User-Network Interface (UNI) is specified in subclause II.4. II.1.1.2 Network-Network Interface For further study. II.1.2 References 111 ITU-T Re

29、commendations X.290 to X.294 (1995), OS1 conformance testing methodology and framework for protocol Recommendations for ITU-T applications. ITU-T Recommendation Q.933, Annex A (1995), Digital Subscriber Signalling System No. I - Additional Procedures for Permanent Virtual Connections (PVCs) Using Un

30、numbered Information Frames. -T Recommendation 4.931 (1993), Digital Subscriber Signalling System No. 1 (DSS I) - ISDN user- network inteace layer 3 speccation for basic call control. -T Recommendation Q.93T, Annex D2), PICS proforma for Digital Subscriber Signalling System No. 1, Additional procedu

31、res for Permanent Virtual Connections (PVCs) using unnumbered information frames. 21 i31 Pl 2, Recommendation Q.933 (1993) is under revision and is being submitted for Resolution No. 1 approval in coordination with Recommendation Q.933 bis. Recommendation Q.933 bis (10/95) 3 COPYRIGHT International

32、Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMN*Q.q33 BIS 95 - 462591 Ob12285 736 I.1.3 Definitions This test suite uses valid, syntactically invalid and inopportune messages to test the IT behaviour. These terms are defined as follows: - A valid m

33、essage is one that is allowed by Annex AJQ.933 and is both syntactically correct and occurs or arrives in an allowed context. - An inopportune message is one that, although syntactically correct, occurs or arrives at a point when not allowed to do so by Annex AJQ.933. - A syntactically invalid messa

34、ge is one that, syntactically, is not allowed by Annex NQ.933. The naming conventions used throughout these suites for test case identifiers are given in II.2.1. 11.2 General aspects As per Recommendations X.290 and X.291 of testing i, “a complete and independent specification of the actions require

35、d to achieve a specific test purpose” is called an abstract test case. The abstract test cases for Annex WQ.933, are defined at the level of abstraction of layer embedded testing methodology. The test cases, along with the test body, include a preamble and a postamble, which are defined below, to en

36、sure starting and ending in a stable state. iI.2.1 Test group and subgroups This test suite has been split into two major groups: 1) Periodic Polling. 2) Bidirectional. Each group is further divided into subgroups: - General: contains valid and inopportune test cases. - Error: contains invalid test

37、cases. - System: contains system parameters test cases. The test case identifiers are of the form: bJYz for Periodic Polling Procedures; BJYz for Bidirectional Procedures, where: xx YY 2 is the state number SO, S1, S2, S3 or nothing; is the event identifier; and is the event class, V: Valid, I: Inop

38、portune, N: “jntax Error. II.2.2 Preamble The preamble of a test case consists of the step required to bring the iUT to the appropriate initial state. II.2.3 Test body The test body is the sequence of steps within a test case that is essential to achieve the test purpose, followed by the verificatio

39、n of the Ws ending state. Verdicts are assigned to the possible outcomes of the test cases. 4 Recommendation Q.933 bis (10/95) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECMN*Q.933 BIS 95 = 4862593, 0632286 672 It is importa

40、nt to test the observable behaviour of the IUT, which includes state transitions and Protocol Data Unit (PDU) responses. If one assumes that all states are implemented, it is not possible to obtain unique traces or signature which would guarantee that the IUT is in the expected state. Verification r

41、outines are written with no reliance on the IUTs state. They use a unique signature observable externally to the IUT. II.2.4 Postamble At the end of the execution of a test body, the IUT may not be in an “idle state”. A postamble is required to bring the IUT from the ending state to an “idle state”.

42、 For all states, a STATUS message is sent to the IT upon the reception of a STATUSENQUIRY. Ii.2.5 Timer definitions The timer types and values used by the tester are those types and default values defined in Annex NQ.933. II.2.6 PICSPEUT relationship to abstract test suite There are instances when t

43、he execution of a test case depends on the answer to a PICS or PIXIT question (II.2.8 Test case selection). II.2.7 PEUT proforma Information supplied by the IUT provider in section IV (electronic format) will be used to configure the tester to execute the conformance test suite. The PIXIT covers all

44、 the parameters needed for Part 1 and 3 and for Annex A, Part 1 and 3 as well. II.2.8 Test case selection The Test Case Selection is done by means of the PICS and PIXIT and may be found in the Test Case Selection Expression Definition Table of the Abstract Test Suite. 11.3 Abbreviations For the purp

45、oses of this Recommendation, the following abbreviations are used. ATS Abstract Test Suite ISDN Integrated Services Digital Network IUT Implementation Under Test NT2 Network Termination of type two os1 PDU PICS PIXIT SUT TA TE1 TTCN Open Systems Inerconnection Protocol Data Unit Protocol Implementat

46、ion Conformance Statement Protocol Implementation extra Information for Testing System Under Test Terminal Adapter Terminal Equipment of type 1 Tree and Tabular Combined Notation Recommendation Q.933 bis (10/95) 5 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Inf

47、ormation Handling ServicesITU-T RECMNxQ.933 BIS 95 4862593 Ob32287 509 SECTION III - Q.933, ANNEX B ABSTRACT TEST SUITE Additional procedures for permanent frame mode connection using acknowledged mode of operation User and Network Sides of User-Network Interface and Network-Network Interface III.1

48、Introduction The user and network sides Abstract Test Suites for Annex B/Q.933 are the subject of further study. SECTION IV - Q.933, ANNEX C ABSTRACT TEST SUITE Provision of OS1 connection mode network services (NC-establishment and release phases) User and Network Sides of User-Network Interface and Network-Network Interface IV.1 Introduction The network and user sides Abstract Test Suites for Annex CIQ.933 are the subject of further study. 6 Recommendation Q.933 bis (10/95) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services