1、 International Telecommunication Union ITU-T Q.3901TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (01/2008) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for the NGN Testing for NGN networks Testing topology for networks and services based on NGN technical means Recommend
2、ation ITU-T Q.3901 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 ISDN Q.60Q.99 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q
3、.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 SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND M
4、OBILE 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 CALL CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999
5、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.3179 Signalling and control requirements and protocols to su
6、pport 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.3849 Testing for NGN networks Q.3900Q.3999 For further detai
7、ls, please refer to the list of ITU-T Recommendations. Rec. ITU-T Q.3901 (01/2008) i Recommendation ITU-T Q.3901 Testing topology for networks and services based on NGN technical means Summary Recommendation ITU-T Q.3901 describes the methodology and list of mandatory tests of NGN functions. This Re
8、commendation is based on Recommendation ITU-T Q.3900. It gives a list of tests related to NGN technical means, NGN solutions and NGN services which shall be used in model and operator networks. Source Recommendation ITU-T Q.3901 was approved on 23 January 2008 by ITU-T Study Group 11 (2005-2008) und
9、er Recommendation ITU-T A.8 procedure. Keywords Model networks, next generation networks (NGN), PSTN, service testing, technical means, testing. ii Rec. ITU-T Q.3901 (01/2008) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommun
10、ications, information and communication technologies (ICTs). 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 a view to standardizing telecommunic
11、ations 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 Recommendations is covered by the procedur
12、e 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 conciseness to indicate both a telecomm
13、unication 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 Recommendation is achieved when all of these
14、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. INTELLECTUAL PROPERTY RIGHTS ITU dr
15、aws 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 Rights, whether asserted by ITU members
16、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 are cautioned that this may not re
17、present the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2009 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Q.3901 (01
18、/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations 2 5 Testing principles 4 5.1 NGN TM local testing methodology 4 5.2 Methodology of NUT testing . 49 5.3 NUT service testing 51 Bibliography. 52 Rec. ITU-T Q.3901 (01/2008) 1 Recommendation ITU-T Q.3901 Testing topolog
19、y for networks and services based on NGN technical means 1 Scope This Recommendation defines the list of checks to be performed during the testing of NGN (NGN TM local testing, NUT and services) in model and operator networks. This Recommendation defines the tasks for NGN TM, NUT and services testin
20、g on NGN for model and operator network, a tests list for model network and operator network, and the reasons for using one or the other network for carrying out the specified test groups. 2 References The following ITU-T Recommendations and other references contain provisions which, through referen
21、ce in this text, constitute 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 re
22、cent edition of the Recommendations 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 Q.1706 Recommen
23、dation ITU-T Q.1706/Y.2801 (2006), Mobility management requirements for NGN. ITU-T Q.3900 Recommendation ITU-T Q.3900 (2006), Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks. ITU-T X.290 Recommendation ITU-T X.290 (199
24、5), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications General concepts. ITU-T X.292 Recommendation ITU-T X.292 (2002), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications The Tree and Tabular Combin
25、ed Notation (TTCN). ITU-T X.295 Recommendation ITU-T X.295 (1995), OSI conformance testing methodology and framework for protocol Recommendations for ITU-T applications Protocol profile test specification. ITU-T Y.1540 Recommendation ITU-T Y.1540 (2007), Internet protocol data communication service
26、IP packet transfer and availability performance parameters. ITU-T Y.1541 Recommendation ITU-T Y.1541 (2006), Network performance objectives for IP-based services. ITU-T Y.2011 Recommendation ITU-T Y.2011 (2004), General principles and general reference model for Next Generation Networks. ITU-T Y.201
27、2 Recommendation ITU-T Y.2012 (2006), Functional requirements and architecture of the NGN release 1. ITU-T Z.140 Recommendation ITU-T Z.140 (2006), Testing and Test Control Notation version 3 (TTCN-3): Core language. 2 Rec. ITU-T Q.3901 (01/2008) ETSI TR 101 667 ETSI TR 101 667 V1.1.2 (1999), Method
28、s for Testing and Specification (MTS); Network Integration Testing (NIT); Interconnection; Reasons and goals for a global service testing approach. ETSI TS 102 237-1 ETSI TS 102 237-1 V4.1.1 (2003), Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 4; Interoperabi
29、lity test methods and approaches; Part 1: Generic approach to interoperability testing. ETSI TS 102 237-2 ETSI TS 102 237-2 V4.1.1 (2003), Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 4; Interoperability test methods and approaches; Part 2: H.323-SIP interope
30、rability test scenarios to support multimedia communications in NGN environments. 3 Definitions This Recommendation defines the following terms: 3.1 model network: A network which simulates the capabilities similar to those available in telecommunication networks; it has a similar architecture and f
31、unctionality and uses the same telecommunication technical means. 3.2 NGN technical means: The NGN network equipment which serves as a basis for building next generation network solutions, including applications in public telecommunication networks. 4 Abbreviations This Recommendation uses the follo
32、wing abbreviations: ABG-FE Access Border Gateway Functional Entity AG Access Gateway AGC Access Gateway Controller AGC-FE Access Gateway Control Functional Entity AM-FE Access Management Functional Entity AMG-FE Access Media Gateway Functional Entity AN-FE Access Node Functional Entity AR-FE Access
33、Relay Functional Entity AS Application Server AS-FE Application Support Functional Entity BGC-FE Breakout Gateway Control Functional Entity BICC Bearer Independent Call Control DNS Domain Name System EN-FE Edge Node Functional Entity FTP File Transfer Protocol Rec. ITU-T Q.3901 (01/2008) 3 EU-FE End
34、 User Functional Entity HGW Home GateWay HTTP Hypertext Transfer Protocol IBC-FE Interconnection Border Gateway Control Functional Entity IBG-FE Interconnection Border Gateway Functional Entity I-CSC-FE Interrogating Call Session Control Functional Entity IN Intelligent Network INAP Intelligent Netw
35、ork Application Protocol IP Internet Protocol ISDN Integrated Services Digital Network IVR Interactive Voice Response MG Media Gateway MGC Media Gateway Controller MGC-FE Media Gateway Controller Functional Entity MGCP Media Gateway Control Protocol MRB-FE Media Resource Broker Functional Entity MRC
36、-FE Media Resource Control Functional Entity MRP-FE Media Resource Processing Functional Entity MS Media Server MSC Mobile Switching Centre NAC-FE Network Access Configuration Functional Entity NAPT Network Address and Port Translation NAT Network Address Translation NGN Next Generation Network NGN
37、TM Next Generation Network Technical Means NIT Network Integration/Interconnection Testing NNTP Network News Transfer Protocol NPF NAPT Proxy Function NSIW-FE Network Signalling Interworking Functional Entity NUT Network Under Test PBX Private Branch eXchange P-CSC-FE Proxy Call Session Control Func
38、tional Entity PD-FE Policy Decision Functional Entity PICS Protocol Implementation Conformance Statement PS Proxy-Server (SIP) PSTN Public Switched Telephone Network QoS Quality of Service 4 Rec. ITU-T Q.3901 (01/2008) RACF Resource and Admission Control Function RGW Residential Gateway SAA-FE Servi
39、ce Authentication and Authorization Functional Entity S-CSC-FE Serving Call Session Control Functional Entity SCTP Stream Control Transmission Protocol SDL Specification and Description Language SG Signalling Gateway SG-FE Signalling Gateway Functional Entity SIP Session Initiation Protocol SL-FE Su
40、bscription Locator Functional Entity SMTP Simple Mail Transfer Protocol SP Signalling Point SS7 Signalling System 7 STP Signalling Transfer Point SUP-FE Service User Profile Functional Entity SUP-PE Service User Profile Physical Entity TAA-FE Transport Authentication and Authorization Functional Ent
41、ity TCAP Transactional Capabilities Application Part TCP Transmission Control Protocol TE Terminal Equipment TMG-FE Trunking Media Gateway Functional Entity TSSTP Test Suite Structure and Test Purpose TTCN Tree and Tabular Combined Notation TUP-FE Transport User Profile Functional Entity UDP User Da
42、tagram Protocol UNI User Network Interface URI Uniform Resource Identifier USIW-FE User Signalling InterWorking Functional Entity 5 Testing principles One should begin testing each component on the so-called NGN TM locally, as described in clause 5.1. Then one may confidently test a network of NGN T
43、M, as described in clause 5.2. After these tests are complete, service testing may be executed, as discussed in clause 5.3. 5.1 NGN TM local testing methodology The NGN TM local testing procedure includes several testing stages. The NGN TM local testing scheme is as shown in Figure 5-1. The first st
44、age of NGN TM local testing is based on the methodology described in ITU-T X.295 and ETSI TS 102 237-1 and ETSI TS 102 237-2. All technical means shall be checked for conformance to ITU-T Recommendations and ETSI standards Rec. ITU-T Q.3901 (01/2008) 5 under the methodology defined in ITU-T X.290, e
45、specially through the use of TSS&TP and PICS. The following stages shall include NGN TM functional testing, NGN TM functional local testing under load and NGN TM conformance local testing. A ring scheme is used in the methodology of NGN TM testing. All testing stages depend on the previous testing s
46、tage results. All NGN TM local tests shall be based on the existing and developing methodologies (Figure 5-1). The results of each NGN TM local testing shall be delivered to the global database, whose structure and data format are not defined in this Recommendation. Figure 5-1 NGN TM local testing m
47、ethodology 5.1.1 NGN TM functionality testing Tables 1 and 2 show the NGN TM functional tests list and a short description of each under the list of mandatory functions in the framework of the test described in clause 7.2 of ITU-T Q.3900. This Recommendation uses the same designations of the functio
48、nal entities as shown in Figure 3 of ITU-T Y.2012. Table 1 NGN functions tests list No. Tests purpose Functional entity Function under test 1.1 The feasibility check to provide interaction between the packet-based transport used in the NGN, and analogue lines or ISDN access. T-1 1.2 The feasibility
49、check to support dynamic QoS control and firewall function to access NGN network. T-2 1.3 The feasibility check to transmit local pre-set configuration information to the users equipment when necessary. T-4 Access transport functions 2.1 The feasibility check to transmit and route traffic from access network to the common transport network, according to QoS mechanisms. T-3 2.2 The feasibility check to access gateway between access network and core network. T-5 Edge and access border gateway functions 6 Rec.
