rfc8858v2.txt   rfc8858.txt 
Internet Engineering Task Force (IETF) C. Holmberg Internet Engineering Task Force (IETF) C. Holmberg
Request for Comments: 8858 Ericsson Request for Comments: 8858 Ericsson
Updates: 5761 May 2020 Updates: 5761 January 2021
Category: Standards Track Category: Standards Track
ISSN: 2070-1721 ISSN: 2070-1721
Indicating Exclusive Support of RTP and RTP Control Protocol (RTCP) Indicating Exclusive Support of RTP and RTP Control Protocol (RTCP)
Multiplexing Using the Session Description Protocol (SDP) Multiplexing Using the Session Description Protocol (SDP)
Abstract Abstract
This document defines a new Session Description Protocol (SDP) media- This document defines a new Session Description Protocol (SDP) media-
level attribute, 'rtcp-mux-only', that can be used by an endpoint to level attribute, 'rtcp-mux-only', that can be used by an endpoint to
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received public review and has been approved for publication by the received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841. Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata, Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8858. https://www.rfc-editor.org/info/rfc8858.
Copyright Notice Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
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[RFC8445] Keranen, A., Holmberg, C., and J. Rosenberg, "Interactive [RFC8445] Keranen, A., Holmberg, C., and J. Rosenberg, "Interactive
Connectivity Establishment (ICE): A Protocol for Network Connectivity Establishment (ICE): A Protocol for Network
Address Translator (NAT) Traversal", RFC 8445, Address Translator (NAT) Traversal", RFC 8445,
DOI 10.17487/RFC8445, July 2018, DOI 10.17487/RFC8445, July 2018,
<https://www.rfc-editor.org/info/rfc8445>. <https://www.rfc-editor.org/info/rfc8445>.
[RFC8843] Holmberg, C., Alvestrand, H., and C. Jennings, [RFC8843] Holmberg, C., Alvestrand, H., and C. Jennings,
"Negotiating Media Multiplexing Using the Session "Negotiating Media Multiplexing Using the Session
Description Protocol (SDP)", RFC 8843, Description Protocol (SDP)", RFC 8843,
DOI 10.17487/RFC8843, May 2020, DOI 10.17487/RFC8843, January 2021,
<https://www.rfc-editor.org/info/rfc8843>. <https://www.rfc-editor.org/info/rfc8843>.
[RFC8859] Nandakumar, S., "A Framework for SDP Attributes When [RFC8859] Nandakumar, S., "A Framework for Session Description
Multiplexing", DOI 10.17487/RFC8859, RFC 8859, May 2020, Protocol (SDP) Attributes When Multiplexing", RFC 8859,
DOI 10.17487/RFC8859, January 2021,
<https://www.rfc-editor.org/info/rfc8859>. <https://www.rfc-editor.org/info/rfc8859>.
9.2. Informative References 9.2. Informative References
[RFC3605] Huitema, C., "Real Time Control Protocol (RTCP) attribute [RFC3605] Huitema, C., "Real Time Control Protocol (RTCP) attribute
in Session Description Protocol (SDP)", RFC 3605, in Session Description Protocol (SDP)", RFC 3605,
DOI 10.17487/RFC3605, October 2003, DOI 10.17487/RFC3605, October 2003,
<https://www.rfc-editor.org/info/rfc3605>. <https://www.rfc-editor.org/info/rfc3605>.
[RFC5576] Lennox, J., Ott, J., and T. Schierl, "Source-Specific [RFC5576] Lennox, J., Ott, J., and T. Schierl, "Source-Specific
Media Attributes in the Session Description Protocol Media Attributes in the Session Description Protocol
(SDP)", RFC 5576, DOI 10.17487/RFC5576, June 2009, (SDP)", RFC 5576, DOI 10.17487/RFC5576, June 2009,
<https://www.rfc-editor.org/info/rfc5576>. <https://www.rfc-editor.org/info/rfc5576>.
[WebRTC] Jennings, C., Boström, H., and J-I. Bruaroey, "WebRTC 1.0: [WebRTC] Jennings, C., Boström, H., and J-I. Bruaroey, "WebRTC 1.0:
Real-time Communication Between Browsers", W3C Candidate Real-time Communication Between Browsers", W3C Proposed
Recommendation, 13 December 2019, Recommendation, <https://www.w3.org/TR/webrtc/>.
<https://www.w3.org/TR/2019/CR-webrtc-20191213/>.
Acknowledgements Acknowledgements
Thanks to Roman Shpount, Paul Kyzivat, Ari Keränen, Bo Burman, Tomas Thanks to Roman Shpount, Paul Kyzivat, Ari Keränen, Bo Burman, Tomas
Frankkila, and Martin Thomson for their comments and input on the Frankkila, and Martin Thomson for their comments and input on the
document. Thanks to Francis Dupont for the GENART review. document. Thanks to Francis Dupont for the GENART review.
Author's Address Author's Address
Christer Holmberg Christer Holmberg
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