Connection-Oriented Media Transport in SDP - - PowerPoint PPT Presentation

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connection oriented media transport in sdp
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Connection-Oriented Media Transport in SDP - - PowerPoint PPT Presentation

Mar 18, 2024 128 likes •178 views

Connection-Oriented Media Transport in SDP draft-ietf-mmusic-sdp-comedia-01.txt David Yon Changes since comedia-00 ! Removed SCTP from list of protocols (another draft) ! Added RFC 2119 definitions ! Expanded source information: nettype

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draft-ietf-mmusic-sdp-comedia-01.txt David Yon

Connection-Oriented Media Transport in SDP

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David Yon - Dialout.Net, Inc. 2

! Removed SCTP from list of protocols (another draft) ! Added RFC 2119 definitions ! Expanded source information: nettype addr-type unicast-address port ! Added clarifications on connection setup rules ! Added clarifications on Bidirectional vs Unidirectional Media ! Added caveat about NAT and source information ! Added new “reuse” direction attribute

Changes since comedia-00

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David Yon - Dialout.Net, Inc. 3

Issues

Is direction:reuse specified correctly?

! Routing of SIP INVITE can lead to ambiguity when renegotiating a session

Possible Solutions:

! Endpoints assume that they are free to reuse an existing connection. ! Get rid of reuse. ! Make reuse be an optional qualifier of the direction rather than a type of direction. For example:

direction:passive reuse direction:active reuse IN IP4 10.1.1.1 1892

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David Yon - Dialout.Net, Inc. 4

Future

Proposed Next Steps

! Ready for Last Call?