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ITU-T H.325 is a new multimedia system project driven by the
ITU , specifically Q12/16. Presently, the
ITU is working on an architecture, studying usage scenarios, and
doing preliminary work on a protocol definition. It has been decided that
the system will utilize ▲XML for signaling.
The H.325 project 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 H.325 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, H.325 envisions an environment in which
a user has many H.325-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.
H.325 is viewed as the successor system to the legacy ▲H.323
and ▲SIP systems, which are now more than 12 years old. A
presentation is available that provides
a conceptual overview of H.325,
as well as a document that contains a
formal project description.
H.325 is still being defined, so it is very much in transition. It is
expected to solidify over the next two to three years, with an initial
release targeted for 2010.
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