ITU-T Study Group 16 designed H.320, H.321, and H.322 (the first
generation of Multimedia Systems and Terminals) through 1992, followed
by H.323, H.324, and H.310 (the second generation) in 1996. Experience
with these systems and the advancement of technology, together with the
advent of the NGN, create an opportunity for a new generation of
multimedia telecommunication systems offering more integrated features,
greater extensibility, and more flexible growth paths for the future. We
also observe that while multimedia is in the heart of NGN, so far not
much attention was given to the specification of multimedia systems and
terminals – a task that clearly falls under the responsibility of ITU-T
SG 16.
The Advanced Multimedia System (AMS) will drive the development of a third
generation multimedia terminal and system architectures able to support emerging,
media rich applications that fall outside the bounds of traditional call-based
communication platforms. These applications include highly converged media
applications involving multiple personal and public devices, enterprise systems
and network services in support of communications, collaboration and entertainment.
Specifications arising from this project will enable the development of the terminals
and systems, and also inter-communication between systems so applications involving
multiple devices and mobile systems can be supported.
The goal of the AMS project is to create a new multimedia terminal and
systems architecture that supports distributed and media rich
collaboration environments. Earlier interactive multimedia protocols
added media to call-based communication establishment protocols enabling
multimedia telephony. In contrast, AMS is envisaged as an environment in
which a user has many AMS-enabled devices including portable wireless,
home entertainment and computer-based devices and is offered many
applications and services that are either peer-to-peer or
network-provided. The user coordinates activities across all of these
environments using the modes that best fit their personal and business
situation and needs or desires.
An AMS project description has been created and SG16 continues to gather requirements
and is currently investigating architectures for this new system. It is expected that
the core AMS system architecture and interfaces will be defined, while applications
(such as voice, application sharing, presence, and video transmission) will be developed
in parallel, thus providing some checks and balances to ensure that the core system sufficiently
meets the needs of a variety of applications. At the same time, there is a strong desire to ensure
that the complexity of any one component is minimized in order to ensure the
highest degree of interoperability.
The Recommendation number H.325 has been reserved for the main
specification that will result from this project. It should be noted
that the intent is of producing one or more H-series Recommendations for
the expected AMS protocols.
Past Milestones:
- CfR Issued: SG 16 WP2 Rapp. meeting, Biel, Switzerland, 17 – 20 May 2005
- Initial CfR Responses: Contributions into the SG 16 Meeting, Geneva, Switzerland, 26 July - 5 August 2005
- Workshop titled “H.323, SIP: is H.325 next?” (San Diego, 9-11 May 2006)
- Agreement in SG16 to create a new Question to study AMS (July 2007)
- Creation of the AMS project description (September 2007)
- Final approval of new Question 12/16 to develop AMS (June 2008)
Next Steps:
- Collection of requirements continues as the terminal and system architecture also takes shape
- Idea formulation and refinement as well as discussion of design takes place between meetings on the
H.325 Design list
- Two monthly electronic meetings are held, with meeting announcements
going to the H.325 Design mailing list (schedule also posted on
http://www.packetizer.com/calendar/)
- The next Rapporteur meeting is scheduled for 8 - 12 March 2010 in Shanghai
- The next SG16 meeting is scheduled for 19 - 30 July 2010 in Geneva
- Completion (depends on input contributions) – 2011/2012*
(*: Tentative dates)
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