ITU-T Study Group 16 activities and H.323

1. ITU-T Study Group 16activities and H.323 Simão Ferraz de Campos Neto Counsellor – ITU-T Study Group 16 Multimedia Services, Systems and Terminals

2. The ITU-T • The ITU is an inter-governmental organization under the umbrella of the United Nations (www.itu.int) • The ITU Telecommunications Standardization Sector (ITU-T) was formed in 1993 replacing the former International Telegraph and Telephone Consultative Committee (CCITT) with a mission is to ensure an efficient and on-time production of high quality standards covering all fields of telecommunications • The ITU-T: • is a unique partnership of governments and industry producing standards on all aspects of telecommunications • currently has over 450 members from industry • has more than 2800 Recommendations in force

3. ITU-T Study Group 16 (www.itu.int/ITU-T/studygroups/com16) Responsible for studies relating to: • multimedia service definition and multimedia systems, including the associated terminals, modems, protocols and signal processing. Lead Study Group on • Multimedia Services, Systems and Terminals • e-business and e-commerce Responsible for the development of Recommendation H.323 and supporting standards

4. ITU-T Study Group 16 Study Group 16 Multimedia Services Systems & Terminals Pierre-André Probst ITU-TSB Counsellor Simão Ferraz de Campos Neto Working Party 1 Modems and Facsimile Terminals Mitsuji Matsumoto Working Party 2 Multimedia Platforms and Interworking Federico Tosco Working Party 3 Media Coding John Magill (acting) Working Party 4 Multimedia Framework John Magill

5. Multimedia terminal and systems H.310 - Broadband audiovisual communication systems and terminals H.320 - Narrow-band visual telephone systems and terminal equipment H.321 - Adaptation of H.320 visual telephone terminals to B-ISDN environments H.322 - Visual telephone systems and terminal equipment for LANs which provide a guaranteed QoS H.323 - Packet-based multimedia communications systems H.324 - Terminal for low bit-rate multimedia communication

6. H.323 family – approved summer 2001 H.323 Annex M3 – DSS1 Tunneling H.323 Annex Q – Far End Camera Control H.323 Annex R – Robustness H.460.2 – Number Portability interworking between H.323 andSCN networks H.450.12 – Common Information Additional Network H.245V8– Control protocol for multimedia communication H.246 Annex F – Interworking of H.323 and H.324 Annex C H.248 Annex L – Error Code and Service Change Reason Description H.248 Annex M.2 – Congestion Control Package H.248 Annex M.4 – Interworking between H.324C (“H.324/M”) and H.323

7. H.323 family – approved March 2002 H.235 Annex F –Hybrid security profile H.460.1 –Guidelines for the Use of the Generic Extensible Framework H.501 (ex H.22x.0) –Protocol for mobility management and inter-domain communication in multimedia systems H.510 (ex H.MMS.1) –Mobility for H.323 multimedia systems H.530 (ex H.235 Annex G) –Symmetric Security Procedures for H.510 H.248 – new H.248.x sub-series

8. H.248 Gateway Control ProtocolRecommendation restructuring • H.248 & Annexes converted into the H.248.x sub-series: • Clear understanding of different components • More modular expandability • Version 1 of H.248.1 comprises the main body plus Annexes A to E of H.248 approved in 06/2000, updated with changes, clarifications and corrections but no new functionality (approved in 03/2002) • H.248.1 Version 1 will formally be superseded by H.248.1 Version 2, currently in the AAP process. • H.248 Annexes F to N converted to Recs. H.248.2 to H.248.15

9. H.248.x Sub-series (1/2) Annex F → H.248.2 Facsimile, text conversation and call discrimination packages Annex G → H.248.3 User interface elements and action packages Annex H → H.248.4 Transport over SCTP Annex I → H.248.5 Transport over ATM Annex J → H.248.6 Dynamic tone definition package Annex K → H.248.7 Generic announcement package Annex L → H.248.8 Error codes and service change reason description

10. H.248.x Sub-series (2/2) Annex M1 → H.248.9 Advanced media server packages Annex M2 → H.248.10 Media gateway resource congestion handling package Annex M4 → H.248.12 H.248 packages for H.323 and H.324 interworking Annex M5 → H.248.13 Quality alert ceasing package Annex M6 → H.248.14 Inactivity timer package Annex N → H.248.15 SDP H.248 package Note: Annex M3 was foreseen for future development.

11. H.323 family – Future (1/2) Examples of ongoing work are: • H.323 – enhancements on: • Packet based MM telephony over error prone channels • Internet Protocols and technologies complementary to H.323 • Real Time modem relay over H.323 (“MoIP”) • H.323 Mobility • H.323 Version 5

12. H.323 family – Future (2/2) More examples: • H.248.x extensions on: • Media Gateway Overload Control Package (.11) • Extended DTMF Detection Package (.16) • Line Test Package (.17) • Package for Support of Multiple Profiles (.18) • Package to Support Decomposed MCU (.19) • Recommendations for Quality of Service over IP Based networks: • H.mmclass Service level QoS classification for service components • H.qos.arch QoS signalling at Application and Transport levels • H.trans.cont Application to Transport Level signalling

13. H.323 Forum • The ITU-T welcomes the creation of the new H.323 Forum • Study Group 16 looks forward to working with the Forum to: • receive user feedback • encourage deployment and interoperability of ITU-T H.323 based products • help promote the work of the ITU-T • We wish you much success!

14. Thank you for your attention! For further contact, please feel free to contact: Simão Ferraz de Campos Neto Counsellor, ITU-T Study Group 16 simao.campos@itu.int Tel: +41-22-730-6805 Fax: +41-22-730-4345 http://www.itu.int/ITU-T