Model networks as an instrument for global interoperability

1. Seminar on ITU-T hot topics for Standardization (Mar del Plata, Argentina, 2 September 2009) Model networks as an instrument for global interoperability Denis Andreev Rapporteur of Q.10/11 ITU-T Director of Technopark Central Research Telecommunication Institute (ZNIIS)

2. Reasons of necessity of NGN testing • Growth of the manufactured equipment nomenclature and software which realize NGN functionality and appear a lot of unify equipment (router with gateway functionality and etc.) • Appear of new set of services which is realized without changes of network and independent of technologies • Absence of guarantee quality of network performance compare with exist TDM network

3. Purpose of NGN testing NGN technologies harmonization, global principle on implementation and operation of NGN networks and usages

4. Exist situation ITU-T on area testing standardization • Present time Conformance testingwhich are included protocols and interfaces testing (TTCN 1 (X.292-1995), TTCN 2 (X.292-1998), TTCN 3 (Z.140-2003) TSS&TP, PICS/PIXIT proformas for different protocols testing) • Future NGN based on the functional entity which interwork with some protocols Interoperability testing(Q.3901)

5. Purposes ITU-T on testing standardization area WTSA-08 Resolution 76 “Global Interoperability” • Interoperability of technical means (TM) which realize the basic NGN functionality (Y.2012, Y.2010) • NGN Services Interoperability • QoS Interoperability

6. The approach of NGN testing • Functional Interop. testing – verification the functionality on TM (EUT) and system-network solutions (NUT) different vendors for compatibility in accordance with basic ITU-T Recs. • Service testing – testing the services on scenarios “end-to-end” include call flow testing and testing with exist provider’s operation systems (Billing, OSS/BSS and etc.) • QoS testing – testing the QoS parameters and RACF functionality

7. ITU-T Rec. Q.3900 as a global approach of testing Purpose – determination Model network as a basic solution for NGN testing Model network – a network which simulates the capabilities similar to those available in present telecommunication networks, has a similar architecture and functionality and uses the same telecommunication equipment Contents of Q.3900 • Classification of NGN TM regarding the NGN functionality (Y.2012) • Determination of testing procedures • Requirements to Model network

8. Architecture of Model Network (Rec.Q.3900)

9. Classification of NGN TM (Rec. Q.3900)

10. Joint ZNIIS-ITU-D Project (ITTC) Purpose – to create an International Telecommunication Testing Centre (ITTC) for testing new technologies, include NGN and train telecom specialists from developing countries First results Testing the NGN system networks solutions on interoperability in accordance with ITU-T Rec. Q.3901: • IMS and Softswitch • BBA

11. ITTC tasks • To search and removal problems and difficulties in TM before realizing it on the “live” network • To solve the interoperability TM different vendors • To save experience for implementation it on the activity of different telecom players • To verify NGN services and preparation the recommendations for implementing it on the exist networks

12. ITTC practical Model network

13. Global problems on functional Interoperability(ITTC ITU-ZNIIS joint project - CIS08-02) • Tariffication data lost in emergency situation in case of geographic redundancy • Absence of statistical data about IP characteristics sessions • Absence the QoS parameters and total layer for session and subscriber in tariffication data • IMS does not interop • Absence of “Ring-back tone” • Absence the possibility of T.38 realizing • Problems with modem connection • Different content of head field in SIP for IMS solutions • Different syntax of parameters which are used in SIP IMS

14. ITU-T (common services requirements – determination services and delivery content) • Y.2271 – common requirements and contents of services NGN rel.1 • Y.2012, Y.2201 – requirements to voice services and instant messages • OMA-PoC – requirements to Push to Talk service (Push over cellular) • F.703, F.724 (VideoTel), F.733 (MMconf) – requirements to multimediaservices • ETSI (requirements to additional data which is included in signaling protocols parameters for implementing each of services) • The set of supplementary services – TIP/TIR, OIP/OIR, HOLD, MWI и т.д. Standardization services - exist situation

15. The global problems

16. The basic reasons of problems

17. The global standardization approach of NGN services

18. The scope of NGN service requirements template (ITU-T Rec.NGN_service) • Service definition, common service characteristics and service providing principle, in point of view operator and customer include: short description of service with imagine form of service (message, voice transmission and etc.), principle of location service in telecom networks and rules of customer’s access to the service, principle of service control procedure: activation, configure, unsubscribing, statistic and tariffication data • Network requirements for providing service, include requirements to: numbering, identification, subscriber’s profile control, type of codec, parameters of QoS, security, and interworking with exist operators systems (accouting, law full intercept and etc.) • Architecture requirements and requirements to functional elements, which are used for service realizing • Equipment’s functional requirements • Service scenario requirements • Signaling protocols requirements for realizing service (call flow)

19. The ETSI approach for service testing (TISPAN 06) • Detail verification syntaxes of signaling protocols in the different equipment trough sending the messages with determined parameters • Service test specifications based on the TTCN-3 Example of ETSI service test specification “Terminating Identification Presentation (TIR)”

20. The new approach of service testing (WP4/11 Q.10/11 Service test specification) • Detail verification syntaxes of signaling protocols in the different equipment trough sending the messages with determined parameters with TTCN-3 (like in ETSI) • Functional testing services (testing the functionality of equipment which is used for implementing services) include logic testing ("end-to-end") • Verification services with existing operators systems: • Accounting system • Statistic system • Operation and management system

21. The real plans of service testing in ITTC UAN testing UPT testing

22. History of testing research area in ITU-T • WTSA-04 (Brasilia, Oct. 2004) Creation of Q.8/11 “NGN test specification” • WTSA-08 (RSA, Dec.08) Creation WP4/11 “Test specifications” Continuation of Q.8/11 “Protocol Test Specifications for NGN” Creation of new questions Q.9/11 “Monitoring parameters for NGN protocols” Q.10/11 “Service test specification for NGN” Q.11/11 “QoS tests specification for NGN” Q.12/11 “NID and USN test specification”

23. The achievement results SG11 under responsibility of testing • Q.3900 Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks (approved 09/06) • Q.3901 Integral testing. Tests and services' distribution for NGN technical means testing in the model and operator networks (approved 01/08) • Q.3902 Parameters to be monitored in the process of operation when introducing NGN in PSTN (approved 01/08) • Q.3903 Formalized presentation of testing results (approved 09/08) • Handbook on NGN technical means testing as applied to NGN technologies to be introduced on PSTN networks (on development)

24. Plans of WP4/11 ITU-T • IMS TM and NUT testing (Draft Rec.Q.3904) • IMS/PES benchmarking • BBA testing (fixed, WiFi, WiMax) (Draft Rec.Q.3906.1, Rec.Q.3906.2 and Rec.Q.3906.3) • NIT between protocols NGN and TDM • “end-to-end” NGN testing (TS1, TS2) (Draft Rec.Q.3915) • NGN supplementary services testing (TIP/TIR, OIP/OIR, HOLD etc) • IPTV testing • NACF and RACF testing • QoS testing

25. с KNOWLEDGEDATABASE Б З ZNIIS Compliant to ITU-T Recommendation Q.3903

26. Virtual repository • Possibility for creation of dedicated areawith restricted access to Knowledge Databasefor storing of different information of Administrations and operators (methodologies, testing reports, network schemes, normative documents and etc.) • Existence ofvirtual constructor of testing methodic, for development of these documents in the automatic mode using powerful set of libraries of testsof functionalities, conformance and interworkingof different technical means, system and network solutions, protocols and services of NGN • Collection and distribution of testing results in the worldwide mode

27. Virtual labs On the preparation meeting for Council-09on the questions of WTSA-08 Resolution #76 implementation, placed in Geneva (Switzerland) July 20-21 2009, Russian Administration delegation has contributedinitiative on creation of international virtual labsbased on Knowledge Database of ITTC project for carrying out ofremote trainings of specialists from developing countrieson the questions of building, development, standardization and testing ofNGN

28. Virtual Lab facilities • Virtual labs, providing the following functions: • accessof specialists from developing countries to the equipment management systems, installed on the ITTC Model Networkthrough Knowledge Database website • Performing of requirednetwork configurations • Remote testingwith further development of reports in the automatic mode • Existence ofGUIfor Knowledge Database • Remote trainingsfor specialists from developing countries on theoretical and practical skills of work with NGN equipment (implementation of WTSA-08 Res.76)

29. Consequence of Global interoperability • Global approach of network interworking • Appear transparent mechanisms for roaming and nomadism in the fixed and wireless networks • Absence the association of services with physical network infrastructure • Subscriber freedom and possibility to satisfy a lot of information miracles

30. Resume for Model networks usages • To find and solve disagreements in the equipment realization before introduction into the live network • Solving compatibility issues and interchangeability of equipment from different vendors • Accumulation of experience in part of solving compatibility problems on current operator netwroks • Maintenance of new services and development procedures of its introduction into the live networks

31. Resume on implementing ITTC activities Reducing of digital gapbysharing experienceof introduction and maintenance of new technologies, implemented on the operators networks from developed countries, on the worldwide telecommunication market Using ITTC as the effective mean ofgathering experienceand consolidation of high-level specialists and experts in the field ofintroductions, testing, standardization and maintenanceof new telecommunication technologies Performance of regional initiatives and private initiative projects for network operators in part of development qualifying standards, which determine entire approaches and rulesin partof introduction of new technologieson the operator networks

32. Thank you for attention Denis Andreev Rapporteur of Q.10 WP4/11 Director of Technopark ZNIIS Central Science Research Telecommunication Institute (ZNIIS), Moscow Tel: +7-495-368-8745 Mob: +7-495-647-9603 Fax: +7-495-368-9105 Email: andreevd@zniis.ru cc: andreevd@ties.itu.int