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Title : A Transport Independent Bandwidth Modifier for the
Session Description Protocol (SDP)
Author(s) : M. Westerlund
Filename : draft-westerlund-mmusic-sdp-bwparam-01.txt
Pages : 14
Date : 2002-10-23
The existing Session Description Protocol (SDP) bandwidth modifiers
and their values include the bandwidth needed also for the transport
and IP layers. When using SDP in protocols like SAP, SIP and RTSP and
the involved hosts reside in networks running different IP versions,
the interpretation of what type of lower layers that is included is
not clear. This documents defines a bandwidth modifier that does not
include transport overhead, instead additional packet rate attributes
are defined. The transport independent bitrate value together with
the packet rate can then be used to calculate the real bitrate over
the actually used transport.
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