ITU-T Q 3900-2006 Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks (Study Group 11)《应用于公共电信网络的下一代网络.pdf

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1、 International Telecommunication Union ITU-T Q.3900TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/2006) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for the NGN Testing for NGN networks Methods of testing and model network architecture for NGN technical means testing

2、 as applied to public telecommunication networks ITU-T Recommendation Q.3900 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE IS

3、DN Q.60Q.99 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL S

4、UBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CAL

5、L CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN Q.3000Q.3999 General Q.3000Q.3029 Network signalling and control functional architecture Q.3030Q.3099 Network data organization within the NGN Q.3100Q.3129 Bearer control signalling Q.3130Q.31

6、79 Signalling and control requirements and protocols to support attachment in NGN environments Q.3200Q.3249 Resource control protocols Q.3300Q.3369 Service and session control protocols Q.3400Q.3499 Service and session control protocols supplementary services Q.3600Q.3649 NGN applications Q.3700Q.38

7、49 Testing for NGN networks Q.3900Q.3999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.3900 (09/2006) i ITU-T Recommendation Q.3900 Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks

8、 Summary ITU-T Recommendation Q.3900 describes the main approaches to NGN solutions and technical means testing. This Recommendation gives the basic principles of NGN testing based on model networks and includes the basic methodology of testing and the common architectures of model networks. Source

9、ITU-T Recommendation Q.3900 was approved on 29 September 2006 by ITU-T Study Group 11 (2005-2008) under the ITU-T Recommendation A.8 procedure. Keywords Model networks, next generation networks, NGN, PSTN, technical means, testing. ii ITU-T Rec. Q.3900 (09/2006) FOREWORD The International Telecommun

10、ication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization 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

11、a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), 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 Recomm

12、endations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for con

13、ciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommenda

14、tion is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party.

15、INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Right

16、s, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers

17、 are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2007 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permi

18、ssion of ITU. ITU-T Rec. Q.3900 (09/2006) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations and acronyms 2 5 Conventions 4 6 Compatibility issues . 4 7 Classification of NGN functions, services and technical means to be tested. 4 7.1 Classification of NGN technical means to

19、 be tested 5 7.2 Classification of NGN functions to be tested. 8 7.3 Conformance of NGN functions to NGN technical means to be tested. 11 8 Testing procedure . 13 8.1 Level 1 NGN TM local testing 13 8.2 Level 2 NUT testing 14 9 Model networks 16 9.1 Purposes of using model networks. 16 9.2 Types of

20、model networks . 16 10 Testing requirements 19 10.1 Model network configuration requirements . 19 10.2 Methodology of model networks testing 19 iv ITU-T Rec. Q.3900 (09/2006) Introduction In the environments of public telecommunication networks conversion from digital circuit-switched to packet swit

21、ching networks, apart from the aspects regarding networking architecture, quality of service, network management, etc., the issues of NGN equipment testing become of primary importance in respect of both compatibility testing of various vendors NGN equipment and compatibility testing of new services

22、 with the existing ones in the process of NGN equipment operation. All these is due to: 1) the growth of the manufactured equipment nomenclature and the increase of software product share used in telecommunications technical means realization and a greater openness of the market; 2) the reduction of

23、 new services development and implementation period. The negative aspects, however, which influence faster introduction of developments are: 1) the standardization process delay from the development and implementation processes, increase of the share of corporate standard documentation; 2) the testi

24、ng costs increase compared to the circuit-switched networks testing as the result of a greater complexity of the equipment used. Taking into consideration the above, it is reasonable to use model networks for the NGN equipment testing and, in the first place, for testing of new protocols as the most

25、 complicated elements of NGN. At present the process of testing may be divided into the following stages: Testing for conformance; Testing for interoperability. A great amount of standards for testing has been developed by ETSI. The most significant achievements (or contributions) include the specif

26、ications for testing methods using TTCN, those on the capabilities of SDL, and those on general testing principles for conformance to ETSI standards. Equipment testing for the conformance of protocols and interfaces to the international standards is performed as a rule in the factory environment; bu

27、t, for the purposes of compatibility and interworking testing the telecommunications operators networks are used. To perform equipment interoperability tests, ETSI has developed a network integral testing approach known as NIT (Network Integration/Interconnection Testing), which is detailed in ETSI

28、TR 101 667. NIT comprises two types of basic tests: end-to-end tests and node-to-node tests. The idea of integral testing in itself is fruitful since the operator should be offered equipment of high quality. However, taking into account rapid growth of new technologies and, as a consequence, the inc

29、rease in equipment complexity, integral testing performed on operator networks is quite costly and lengthy in view of the arrangement of testing zones. Besides, it would not be reasonable to wait for external events like incidents affecting the operator networks in order to test them. It seems that

30、the methodology of integral testing may be complemented and updated by the creation of model networks to perform equipment compatibility tests, followed by subsequent resource integration of the model networks to ensure full-fledged integral testing taking into account the interworking testing resul

31、ts. ITU-T Rec. Q.3900 (09/2006) 1 ITU-T Recommendation Q.3900 Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks 1 Scope This Recommendation assumes conformance with the functionality and purpose defined in ITU-T Y.2001 a

32、nd ITU-T Y.2011. While it defines a network structure to which the testing requirements can be related, it also defines general principles which hold independently of details which may change with further work. Further Recommendations extend these principles into a detailed testing methodology. Admi

33、nistrations may require operators and service providers to take into account national regulatory and national policy requirements in implementing this Recommendation. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, const

34、itute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Re

35、commendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T X.295 ITU-T Recommendation X.295 (199

36、5), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Protocol profile test specification. ITU-T Y.1540 ITU-T Recommendation Y.1540 (2002), Internet protocol data communication service IP packet transfer and availability performance parameters. ITU

37、-T Y.1541 ITU-T Recommendation Y.1541 (2006), Network performance objectives for IP-based services. ITU-T Y.2001 ITU-T Recommendation Y.2001 (2004), General overview of NGN. ITU-T Y.2011 ITU-T Recommendation Y.2011 (2004), General principles and general reference model for Next Generation Networks.

38、ITU-T Y.2012 ITU-T Recommendation Y.2012 (2006), Functional requirements and architecture of the NGN release 1. ITU-T Y.2111 ITU-T Recommendation Y.2111 (2006), Resource and admission control functions in Next Generation Networks. ITU-T Y.2201 ITU-T Recommendation Y.2201 (2007), NGN release 1 requir

39、ements. ETSI TR 101 667 ETSI TR 101 667 (1999), Methods for Testing and Specification (MTS); Network Integration Testing (NIT); Interconnection; Reasons and goals for a global service testing approach. 2 ITU-T Rec. Q.3900 (09/2006) ETSI TS 102 237-1 ETSI TS 102 237-1 (2003), Telecommunications and I

40、nternet Protocol Harmonization Over Networks (TIPHON) Release 4; Interoperability test methods and approaches; Part 1: Generic approach to interoperability testing. 3 Definitions This Recommendation defines the following terms: 3.1 model network: Network which simulates the capabilities similar to t

41、hose available in present telecommunication networks, has a similar architecture and functionality and uses the same telecommunication technical means. 3.2 NGN technical means: The NGN basic equipment which serves as a basis for building new generation network solutions, including for application in

42、 public telecommunication networks. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: 3G Third Generation ANI Application Network Interface AS Application Server ASN Abstract Syntax Notation ATM Asynchronous Transfer Mode ATS Abstract Test Suite BICC Bea

43、rer Independent Call Control BS Billing System CMIP Common Management Information Protocol CORBA IDL Common Object Request Broker Architecture Interface Definition Language DSS 1 Digital Subscriber System No. 1 DTMF Dual Tone Multifrequency FE Functional Entities FTAM File Transfer Access Management

44、 FTP File Transfer Protocol GDMO Guidelines for the Definition of Managed Objects GK Gatekeeper GSM Global System for Mobile communications GW Gateway GW-LTE Media Gateway for Legacy Terminal Equipment HSS Home Subscriber System IIOP Internet Inter-Orb protocol IMS IP Multimedia Subsystem ITU-T Rec.

45、 Q.3900 (09/2006) 3 IP Internet Protocol ISDN Integrated Services Digital Network ISUP ISDN User Part IUA ISDN User Adaptation M3UA MTP 3 User Adaptation layer MDS Media Server MeS Messaging Server MGC Media Gateway Controller MGCP Media Gateway Control Protocol MGW Media Gateway MSC Mobile Switchin

46、g Centre NACF Network Attachment Control Function NAPT Network Address Port Translation NGN Next Generation Network NGN-IAD NGN Integrated Access Devices NIT Network Integration/Interconnection Testing NMS NGN Management System NNI Network-Network Interface NUT Network Under Test PBX Private Branch

47、Exchange PICS Protocol Implementation Conformance Statement PLMN Public land Mobile Network PS Proxy Server PSN Packet Switched Network PSTN Public Switched Telephone Network QoS Quality of Service RTCP Real-time Transfer Control Protocol RTP Real-time Transfer Protocol SCTP Session Control Transfer

48、 Protocol SDH Synchronous Digital Hierarchy SDL Specification and Description Language SG Signalling Gateway SIP Session Initiation Protocol SIP-I Session Initiation Protocol for ISDN SLA Service Level Agreement 4 ITU-T Rec. Q.3900 (09/2006) SNMP Simple Network Management Protocol SP Signalling Poin

49、t SS7 Signalling System No. 7 SSP Service Switching Point STP Signalling Transfer Point TE Terminal Equipment TM Technical Means TNE Transport Network Environment TSS Proxy server SIP (PS); IP multimedia subsystem (IMS). _ 1NGN technical means shall be implemented taking into account the mandatory NGN function set corresponding to the supposed sphere of application of these means; at the same time, the composition and number of protocols and interfaces in the specified functionality may be