Technical Summary:
This document describes the most typical and important use cases
for sending multiple streams in a telepresence conference. Telepresence conferencing
systems seek to create an environment that gives non
co-located users or user groups a feeling of co-located presence through multimedia
communication including at least audio and video signals of high fidelity.
A number of techniques for handling audio and video streams are
used to create this experience. When these techniques are not similar,
interoperability between different systems is difficult at best,
and often not possible. Conveying information about the relationships
between multiple streams of media would allow senders and receivers
to make choices to allow telepresence systems to interwork.
Working Group Summary:
Was the document considered in any WG, and if so, why was
it not adopted as a work item there? Was there controversy
about particular points that caused the WG to not adopt the
document?
This document is a product of the CLUE WG. There was no controversy
with regards to adopting this document as a WG document. The document has been
thoroughly reviewed by the CLUE WG participants and is deemed ready
for publication.
Document Quality
Are there existing implementations of the protocol? Have a
significant number of vendors indicated their plan to
implement the specification? Are there any reviewers that
merit special mention as having done a thorough review,
e.g., one that resulted in important changes or a
conclusion that the document had no substantive issues? If
there was a MIB Doctor, Media Type or other expert review,
what was its course (briefly)? In the case of a Media Type
review, on what date was the request posted?
The intent of this document is to highlight key uses cases that are
supported in current telepresence systems. The objective within the CLUE
WG is to develop protocols that will support those use cases to enable
more widespread interoperability of telepresence systems. It should also
be noted that a number of these use cases were originally documented
in the IMTC Telepresence Activity Group, that is awaiting the completion
of the CLUE protocol development to progress the interoperability of
telepresence systems. The IMTC chose to bring their original requirements
and use cases as input to the work in the IETF, recognizing IETF
as the SDO that should be doing the standards development. There are a
number of key vendors in the telepresence industry that plan to
implement the CLUE WG series of specifications.
Lennard Xiao reviewed the document and suggested (and provided some text)
for the telemedicine use case, which is an important use case
for current telepresence systems. Christian Groves has carefully reviewed
several versions of this WG document.
Personnel
Who is the Document Shepherd? Who is the Responsible Area
Director?
Mary Barnes (CLUE WG co-chair) is the Document Shepherd.
Gonzalo Camarillo is the Responsible AD.