ITU-T IP Related Studies Arshey Odedra ITU-T TSB

ITU-T IP Related Studies Arshey Odedra ITU-T TSB Engineer: arshey. odedra@itu. int International Telecommunication Union [ITU-T Seminar Botswana 24 -26 July – 2002]

ITU-T IP Related Studies • (1) ITU-T IP Project • (2) ) ITU-T SG 11 Signalling & IP activities (3)IP Cable Communications • (4)IP-Qo. S/Performance • (5)IP-Optical Perfce • (6)Numbering • (7)IP and Security • (8)Multimedia (MM)

(1) The ITU-T IP Project • ‘ITU-T IP Project’ Cover IP related ITU-T work • Project Doc Issue 4: SG 13 Website

Scope of the Project

SG 13 IP Work • Y. 1231 - IP Access Network Architecture • Y. 1310 - Transport of IP over ATM in public networks • Y. 1401 - General requirements for interworking with IP-based Networks • Y. 1241 - Support of IP-based services using IP transfer capabilities

SG 13 IP work • Y. 17 oam - OAM and protection switching for IPbased networks • Y. 1540 - IP packet transfer and availability performance parameters • Y. 1541 - IP performance objectives and allocations • Y. 1311 - IP VPN • Y. 1311. 1 - IP VPN over MPLS • Y. satip - Satellite IP networking architecture • Y. 123 qos - IP access quality of service • Y. ipbypass - IP bypass in access networks

SG 13 Future Plans • SGs continue to build links with the IETF • SG 13 develop and manage the IP Project

(2) ITU-T SG 11 Signalling & 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

ITU-T SG 11 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

SS 7 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 CS 3 Recs approval target: 2003.

(3) IP Cable Communnications • IPCablecom (SG 9) • Defines architecture and interface specs interactive services over cable television network using IP • Market driver: IP telephony

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

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

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

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

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

Qo. S Parameters ITU-T SG 12/16 User Perceived Qo. S SERVICE ITU-T SG 16/11 Codec Performance, VAD, Frames per Packet, Jitter Buffer Size, Codec Delay, FEC (Redundancy) APPLICATION ITU-T SG 13/IETF Max Packet Loss, Max Mean Delay, Max Delay Variation. TRANSPORT

Some Discussion topics on IP Network Qo. S Control • Harmonised IP Qo. S signaling • Interworking IP Qo. S mechanisms

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

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

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 Qo. S Classes • Suggest Qo. S Signaling Support/Methods • Parameter Revisions – Y. 1540 (Nov 2002) • “other” Packet Transfer – MPLS?

(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? )

(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. 509 v 3 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

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. 518 Alignment with IETF standards Defect reports in entire X. 500 -series

SSG Role on Security • Q. 3/SSG Identification of existing and evolving IMT-2000 Systems – Q. 1741 3 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

Study Group 16 - Security-related Qs in the Media. Com 2004 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. F/16 - MM Quality of Service & E-2 -E Performance in MM Systems Q. 1/16 Q. 2/16 Q. 3/16 Q. 4/16 MM Systems, Terminals & Data Conferencing MM over Packet Networks using H. 323 systems Infrastructure & Interoperability for MM over Packet Network Systems Video and Data conferencing using Internet supported Services Q. 5/16 Mobility for MM Systems & Services H. 225. 0 H. 323 H. 324 H. 450 T. 120 H. 460 H. 245 H. 246 H. 248 H. 501 H. 510 H. 530

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

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

(8)Multimedia (MM) ITU-T Study Group 16 Project: Media. Com 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

MEDIACOM 2004 Framework in SG 16 FSA Framework Study Areas 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

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

Equipment/protocol perspective User perspective MM Element Interdependence

GENEVA THANK YOU 33