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Title : SDP attribute for qualifying Media Formats with
Generic Parameters
Author(s) : R. Kumar, F. Andreasen
Filename : draft-rajeshkumar-mmusic-gpmd-03.txt
Pages : 12
Date : 2003-5-20
This document defines a new SDP attribute called general-purpose
media descriptor (gpmd). The gpmd attribute allows the use of new
informative parameters, gpmd parameters, to qualify existing media
formats. These gpmd parameters are not part of the standard (e.g.,
MIME) definition of the media format and support for them with a
given media format can not be assumed. Their use is therefore
limited to cases where they provide information that may be of use to
the other party in a session but is not critical to the use of the
particular media format. This document also defines a specific gpmd
parameter, voice-band data, which can be used to describe a media
format as carrying voice-band data. This enables the receiver to
optimize its handling of the media received.
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