1、 International Telecommunication Union ITU-T Series TTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 1(11/2004) SERIES T: TERMINALS FOR TELEMATIC SERVICES Conformance testing requirements for Recommendations of the T.170-series ITU-T T-series Recommendations Supplement 1 T series Suppleme
2、nt 1 (11/2004) i Supplement 1 to ITU-T T-series Recommendations Conformance testing requirements for Recommendations of the T.170-series Summary The primary purpose of conformance testing is to increase the probability that different implementations are able to interwork. This supplement provides gu
3、idelines on the conformance testing for Recommendations of the T.170-series using DAVIC specifications, as the conformance testing information contained in the DAVIC specifications is not sufficient in all cases. This supplement relies on the testing architecture and terminology based on ISO/IEC 964
4、6 conformance testing. Besides conformance testing, which cannot guarantee interworking, interoperability testing is necessary where a products capability of working with others to achieve a common task is checked. Interoperability testing is outside the scope of this supplement. Source Supplement 1
5、 to ITU-T T-series Recommendations was agreed on 26 November 2004 by ITU-T Study Group 16 (2005-2008). ii T series Supplement 1 (11/2004) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication St
6、andardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA),
7、 which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall with
8、in ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this publication
9、 is voluntary. However, the publication may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the publication is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and t
10、he negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the publication is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this publication may involve the
11、use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the publication development process. As of the date of approval of this publication, IT
12、U had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2005 All righ
13、ts reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. T series Supplement 1 (11/2004) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Abbreviations and acronyms 3 4 Testing methodologies 5 5 Conformance testing of set-top box
14、5 5.1 Testing of MHEG-5 6 5.2 Testing of data syntaxes . 14 5.3 Testing of DSM-CC U-U . 18 5.4 Testing of DSM-CC U-N . 23 5.5 Testing of network access 29 6 Conformance testing of server 34 6.1 Testing of DSM-CC U-U . 34 6.2 Testing of DSM-CC U-N . 38 6.3 Testing of network access 44 7 Conformance t
15、esting of SRM . 44 7.1 Testing of DSM-CC U-N . 44 7.2 Testing of network access 46 Annex A Information on PICS and RL. 47 A.1 Purpose of Requirements Lists. 47 A.2 Notation used 47 A.3 Categories of PICS proforma items 47 T series Supplement 1 (11/2004) 1 Supplement 1 to ITU-T T-series Recommendatio
16、ns Conformance testing requirements for Recommendations of the T.170-series 1 Scope This supplement provides guidelines on the conformance testing of DAVIC specifications. The information on conformance testing contained in the DAVIC specification is not sufficient in all cases. This supplement will
17、 complement this information. This supplement will summarize and provide additional information on conformance requirements of separate standards referred to in the DAVIC specifications and will provide additional information on how to test the conformance requirements by proposing the means of test
18、ing and test cases. This supplement relies on the testing architecture and terminology based on ISO/IEC 9646 conformance testing. The primary purpose of conformance testing is to increase the probability that different implementations are able to interwork. Besides conformance testing, which cannot
19、guarantee interworking, interoperability testing is necessary where a products capability of working with others to achieve a common task is checked. Interoperability testing is outside the scope of this supplement. The DAVIC 1.0 specifications define reference points at various levels. For the purp
20、ose of this supplement, the P1 Partition level DAVIC System Reference Model is most appropriate. For this supplement, only the reference points A9 and A1 are taken into account as they are already specified within DAVIC 1.0 and are also implemented in DAM. This implies that the conformance testing i
21、n this supplement will be applied to the Server and the STU respectively. The following protocols and transfer syntaxs are relevant for the reference points A1 and A9: ISO/IEC MHEG-5; ISO/IEC DSM-CC; OMG IIOP; ATM protocols; ISO/IEC MPEG-2 TS; standards for physical layers. This supplement does not
22、specify conformance requirements and test cases in detail for lower layer protocols like TCP/IP, ATM signalling, MPEG-2 TS, etc. as these requirements are already specified in the relevant standards, products have already been tested and interworking has already been demonstrated. 2 References ITU-T
23、 Recommendation H.262 (2000) | ISO/IEC 13818-2:2000, Information technology Generic coding of moving pictures and associated audio information: Video. ITU-T Recommendation I.430 (1995), Basic user-network interface Layer 1 specification. ITU-T Recommendation T.172 (1998), MHEG-5 Support for base-lev
24、el interactive applications. ISO/IEC 13522-5:1997, Information technology Coding of multimedia and hypermedia information Part 5: Support for base-level interactive applications. 2 T series Supplement 1 (11/2004) ITU-T Recommendation T.176 (1998), Application programming interface (API) for digital
25、storage media command and control (DSM-CC). ITU-T Recommendation X.290 (1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications General concepts. ISO/IEC 9646-1:1994, Information technology Open Systems Interconnection Conformance testing methodol
26、ogy and framework Part 1: General concepts. ITU-T Recommendation X.291 (1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Abstract test suite specification. ISO/IEC 9646-2:1994, Information technology Open Systems Interconnection Conformance
27、 testing methodology and framework Part 2: Abstract Test Suite specification. ITU-T Recommendation X.292 (2002), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications The Tree and Tabular Combined Notation (TTCN). ISO/IEC 9646-3:1994, Information techn
28、ology Open Systems Interconnection Conformance testing methodology and framework Part 3: The Tree and Tabular Combined Notation (TTCN). ITU-T Recommendation X.293 (1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Test realization. ISO/IEC 9
29、646-4:1994, Information technology Open Systems Interconnection Conformance testing methodology and framework Part 4: Test realization. ITU-T Recommendation X.294 (1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Requirements on test labora
30、tories and clients for the conformance assessment process. ISO/IEC 9646-5:1994, Information technology Open Systems Interconnection Conformance testing methodology and framework Part 5: Requirements on test laboratories and clients for the conformance assessment process. ITU-T Recommendation X.295 (
31、1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Protocol profile test specification. ISO/IEC 9646-6:1994, Information technology Open Systems Interconnection Conformance testing methodology and framework Part 6: Protocol profile test speci
32、fication. ITU-T Recommendation X.296 (1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Implementation conformance statements. ISO/IEC 9646-7:1995, Information technology Open Systems Interconnection Conformance testing methodology and frame
33、work Part 7: Implementation Conformance Statements. ITU-T Recommendation X.724 (1996) | ISO/IEC 10165-6:1997, Information technology Open Systems Interconnection Structure of management information: Requirements and guidelines for implementation conformance statement proformas associated with OSI ma
34、nagement. T series Supplement 1 (11/2004) 3 ISO/IEC 11172-2:1993, Information technology Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s Part 2: Video. ISO/IEC 13818-6:1998, Information technology Generic coding of moving pictures and associated aud
35、io information Part 6: Extensions for DSM-CC. DAVIC 1.0, Part 12: Dynamics, reference points, and interfaces. DAVIC 1.0, Part 3: Service Provider System architecture and interfaces. DAVIC 1.0, Part 4: Delivery system architecture and interfaces. DAVIC 1.0, Part 5: Service Consumer System architectur
36、e and interfaces. DAVIC 1.0, Part 7: High-layer and Mid-layer protocols. DAVIC 1.0, Part 8: Lower-layer protocols and physical interfaces. DAVIC 1.0, Part 9: Information representation. ETSI ETR 211 ed.2 (1997), Digital Video Broadcasting (DVB); Guidelines on implementation and usage of Service Info
37、rmation (SI). ETSI EN 300 429 V1.2.1 (1998), Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for cable systems. ETSI ETR 328 ed.1 (1996), Transmission and Multiplexing (TM); Asymmetric Digital Subscriber Line (ADSL); Requirements and performance. ANSI T1.413-1998,
38、Network to customer installation interfaces Asymmetric Digital Subscriber Line (ADSL) Metallic Interface. ETSI EN 300 421 V1.1.2 (1997), Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for 11/12 GHz satellite services. OMG CORBA 2.0 (1995), The Common Object Reques
39、t Broker: Architecture and Specification. 3 Abbreviations and acronyms This supplement uses the following abbreviations: ADSL Asymmetric Digital Subscriber Line ATM Asynchronous Transfer Mode ATS Abstract Test Suite BER Basic Encoding Rules CLUT Colour Lookup Table DAM DAVIC Accompanying Measures DS
40、M-CC Digital Storage Media Command and Control DVB Digital Video Broadcasting ESC End-Service Consumer ESP End-Service Provider GIOP Generic Inter-ORB Protocol HTML Hypertext Markup Language ICMP Internet Control Message Protocol 4 T series Supplement 1 (11/2004) ICS Implementation Conformance State
41、ment IDL Interface Definition Language IOP Inter-ORB Protocol ISDN Integrated Services Digital Network IUT Implementation Under Test IXIT Implementation Extra Information For Testing LT Lower Tester MIB Management Information Base MOT Means of Testing MPEG Moving Picture Experts Group MTU Maximum Tr
42、ansfer Unit NRC Network Related Control NTSC National Television Standards Committee (TV standard) OMG Object Management Group ORB Object Request Broker PCO Point of Control and Observation PHY PHYsical layer PICS Protocol Implementation Conformance Statement PMD Physical Medium Dependent PSTN Publi
43、c Switched Telephone Network QoS Quality of Service RL Requirements List RPC Remote Procedure Call SDH Synchronous Digital Hierarchy SI Service Information SM Session Manager SNMP Simple Network Management Protocol SRC Service Related Control SRM Session and Resource Manager STU Set Top Unit SUT Sys
44、tem Under Test TBA To Be Added TS Transport Stream TV Television U-N User-to-Network UNO Universal Networked Object UT Upper Tester T series Supplement 1 (11/2004) 5 U-U User-to-User VoD Video on Demand 4 Testing methodologies ITU-T Recs X.29x series | ISO/IEC 9646 is a multi-part Standard that spec
45、ifies a general methodology for testing the conformance of products to OSI specifications, when such products are claimed to implement those specifications. Testing refers to the process of examining a product, a process or a service in accordance with a specified method in order to establish one or
46、 more characteristics. There are different types of testing. To ensure that standards are implemented, the most important type of testing is conformance testing where a products conformance with standards is checked. Conformance testing applies to testing conformance to the specification of OSI prot
47、ocols (e.g., DSM-CC), OSI protocol profiles and the specification of a transfer syntax (e.g., ASN.1) used in combination with a specific OSI protocol. For some specifications (e.g., MHEG-5), it is necessary to have a testing methodology that can verify implementation support at the semantic as well
48、as the data stream or syntax level. Implementation conformance testing is based on the concept of measuring an implementations ability to generate and/or receive a representative set of test cases. ISO/IEC 9646 is applicable to the different phases of the conformance testing process, which are mainl
49、y: the specification of an Abstract Test Suite (ATS) for particular OSI protocols and profiles of these protocols; realization of a Means of Testing (MOT); the conformance assessment process on the basis of an Implementation Conformance Statement (ICS) resulting in the production of a System Conformance Test Report (SCTR) and one or more Protocol Conformance Test Reports (PCTR). This supplement does not specify a co
