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ITU-T IP Related Studies Arshey Odedra TSB Engineer: ITU-T TSB Engineer: International Telecommunication Union.

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Presentation on theme: "ITU-T IP Related Studies Arshey Odedra TSB Engineer: ITU-T TSB Engineer: International Telecommunication Union."— Presentation transcript:

1 ITU-T IP Related Studies Arshey Odedra TSB Engineer: ITU-T TSB Engineer: International Telecommunication Union [ITU-T Seminar Botswana July – 2002]

2 ITU-T IP Related Studies (1) ITU-T IP Project (2) ) ITU-T SG11Signalling & IP activities (3)IP Cable Communications (4)IP-QoS/Performance (5)IP-Optical Perfce (6)Numbering (7)IP and Security (8)Multimedia (MM)

3 (1) The ITU-T IP Project ITU-T IP Project Cover IP related ITU-T work Project Doc Issue 4: SG13 Website

4 Scope of the Project

5 SG13 IP Work Y IP Access Network Architecture Y Transport of IP over ATM in public networks Y General requirements for interworking with IP-based Networks Y Support of IP-based services using IP transfer capabilities

6 SG13 IP work Y.17oam - OAM and protection switching for IP- based networks Y IP packet transfer and availability performance parameters Y IP performance objectives and allocations Y IP VPN Y IP VPN over MPLS Y.satip - Satellite IP networking architecture Y.123qos - IP access quality of service Y.ipbypass - IP bypass in access networks

7 SG13 Future Plans SGs continue to build links with the IETF SG13 develop and manage the IP Project

8 (2) ITU-T SG11Signalling & IP activities SCOPE: Defines Signalling requirements and protocols for: –enhancements to existing Recommendations on access (UNI) and (inter)-network (NNI) signalling protocols for PSTN, ISDN and Packet (ATM and IP)-based networks –Some Mobility & MM related functions –the support of voice, data and Multi-media communications and services –emerging NGN architectures, signalling requirements, and control Protocols including Internet Protocol (IP) related control functions Lead Study Group for IN

9 ITU-T SG11 Current work focus: Interactions between IN and IP-based networks IP-related signalling protocols Bearer (ATM, IP) Independent Call Control (i.e. BICC) Signalling transport over IP

10 SS7 Convergence towards Packet based Networks - Intelligent Network architecture and protocols enhanced - For Call control signalling, Bearer Independent Call Control (BICC) protocols - over Packet based transport networks –BICC Recs approved (2000 & 2001). –BICC CS3 Recs approval target: 2003.

11 (3) IP Cable Communnications IPCablecom (SG9) Defines architecture and interface specs interactive services over cable television network using IP Market driver: IP telephony

12 IPCablecom Service Possibilities Residential/ Business IP Telephony Video IP telephony Voice/data/video unified messaging Enhanced conferencing and media services Entertainment Services Real-time multiplayer interactive gaming

13 AN Access Node CM Cable Modem CMS Call Management Servers HFC Hybrid Fiber Coax network MTA Multimedia Terminal Adapter PSTN Public Switched Tel. Network Embedded MTA IPCablecom Components PSTN Gateway CMS CM MTA Back Office Servers Managed IP Network AN CM HFC

14 IPCablecom Recs. for interoperability intra-zone and with PSTN Architecture J.160 Architecture Signaling J.162 Network Call Signalling J.165 IPCablecom Signalling Transport Protocol J.171 Trunk Gateway Control Protocol Quality of Service J.163 Dynamic QoS Media/Codecs J.161 Audio Codec Requirements. OSS J.164 Event Messaging J.166 MIB Framework J.167 MTA Provisioning J.168 MTA MIB J.169 NCS MIB Security J.170 (02/02) Security A set of recommendations approved (2001/2002)

15 IPCablecom Recs. for interoperability inter-zone and inter-domain directly over managed IP backbones Quality of Service J.174 (02/02)Inter- domain QoS Security J.170 (02/02) Security Architecture For further study Signaling For further study OSS J.164 (03/01) Event Messaging

16 (4)IP-QoS/Performance QoS Classes : Basis for IP Network QoS Control IP QoS control: IP/PSTN network convergence Y.1541(05/2002) Y.1540=I.380 QoS signaling protocols Y.1541

17 Max Packet Loss, Max Mean Delay, Max Delay Variation TRANSPORT APPLICATION Codec Performance, VAD, Frames per Packet, Jitter Buffer Size,Codec Delay, FEC (Redundancy) QoS Parameters ITU-T SG16/11ITU-T SG13/IETF SERVICE User Perceived QoS ITU-T SG12/16

18 Some Discussion topics on IP Network QoS Control Harmonised IP QoS signaling Interworking IP QoS mechanisms

19 (5) IP-Optical Network & Performance Aspects IP-Optical Networks: Motivation - Infrastructure Attributes - Capabilities - Operational Benefits

20 IP/Optical Networks: Performance Benefits & Challenges Performance Benefits –Increased transmission capacity –Reduced packet transfer delay, delay variation, loss, error –Lower call set up delays and blocking probabilities –Improved service availability Some Challenges –Specify interoperable performance signaling protocols –Relate IP user/client requirements with control mechanisms –Define compatible network management strategies

21 IPPM and Question 6/13 New RFCs –Loss Patterns –Bulk Transfer Capacity Current (IETF) Drafts –Packet Reordering –Active Meas. Protocol Req. –IPPM MIB New Work on –Link Bandwidth Capacity Performance Objectives –Y.1541 (May 2002), six QoS Classes Suggest QoS Signaling Support/Methods Parameter Revisions –Y.1540 (Nov 2002) other Packet Transfer –MPLS?

22 (6) Numbering ENUM Significance: - Mapping telephone numbers onto Internet. - Could allow conventional telephones to call IP terminals (PCs). - ITU Responsibility: Define and implement administrative procedures that coordinate delegations of E.164 numbering resources into the agreed DNS name servers - Draft Recommendation E.A-ENUM is being prepared by Study Group 2: (target E.A-ENUM, Dec. 2002?)

23 (7)IP and Security Directory Access Control with X.509 Attribute Certificates: The user given Attribute Certificate (AC) which strongly binds his/her name to the privileges being given to him/her The AC is signed by the Attribute Authority (Resource Owner or his delegate) Similar to X.509v3 certificate, only holds a sequence of attributes rather than a public key An attribute certificate can be stored anywhere since it is secure and self contained

24 Standardisation Work of Q.9/17 Friends attributes in X.501, X.511 Distributed page results service in X.518 Related Entries in X.501, X.511, X.518 Alignment with IETF standards Defect reports in entire X.500-series

25 SSG Role on Security Q.3/SSG Identification of existing and evolving IMT-2000 Systems –Q GPP security specifications Q.1/SSG Service and network capability requirements and network architecture & Q.7/SSG Convergence of fixed and existing IMT-2000 systems

26 Study Group 16 - Security-related Qs in the MediaCom2004 project Q.C/16 - MM Applications & Services F.706 Q.D/16 - Interoperability of MM Systems & Services Q.G/16 - Security of MM Systems & Services H.233, H.234, H.235 Q.1/16 MM Systems, Terminals & Data Conferencing H.320 H.324 T.120 Q.2/16 MM over Packet Networks using H.323 systems H H.323 H.450 H.460 Q.3/16 Infrastructure & Interoperability for MM over Packet Network Systems H.245 H.246 H.248 Q.4/16 Video and Data conferencing using Internet supported Services Q.5/16 Mobility for MM Systems & Services H.501 H.510 H.530 Q.F/16 - MM Quality of Service & E-2-E Performance in MM Systems

27 Q.G/16 Work and Study Items Some Highlights Investigate confidentiality and privacy of all signaling Address centralized key management for MM systems Security for MM Mobility Optimize voice encryption, develop video encryption MM security support for emergency services Consolidate or develope new security profiles Security interworking H.323-SIP

28 Emergency Telecoms Services (ETS) Security for MM Applications and Systems Security objectives: –prevent theft of service and denial of service by unauthorized user –support access control and authorization of ETS users –confidentiality and integrity of calls –provide rapid and user-friendly authentication of ETS users H.SETS : provisional title for a new work item under study in Q.G/16 - focus on the multimedia security aspects of ETS

29 (8)Multimedia (MM) ITU-T Study Group 16 Project: MediaCom 2004 Objective : to create a framework for the harmonized and coordinated development of multimedia communication standardization for use across all ITU-T and ITU-R Study Groups, and in close cooperation with other regional and international SDOs and industry forums

30 MEDIACOM 2004 Framework in SG16 MEDIACOM 2004 (Q A/16) Generic Questions B/16 to H/16 Framework Standardisation Areas (FSA) Equipment and system questions 1/16 to 15/16 FSA Framework Study Areas

31 Project MediaCom 2004(A/16)Project MediaCom 2004(A/16) MM Architecture (B/16) MM Applications and Services(C/16) Interoperability of MM Systems and Services(D/16) Media Coding(E/16) QoS & E-to-E performance in MM Systems(F/16) Security of MM Systems and Services(G/16) Accessibility(H/16) Framework Study Areas (FSA)

32 MM Element Interdependence User perspective Equipment/protocol perspective


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