Last call redux: draft-ietf-rtcweb-rtp-usage-26

Alissa Cooper <> Wed, 23 March 2016 20:43 UTC

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From: Alissa Cooper <>
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Subject: Last call redux: draft-ietf-rtcweb-rtp-usage-26
Date: Wed, 23 Mar 2016 13:44:08 -0700
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draft-ietf-rtcweb-rtp-usage-25 was approved for publication in July 2015 and is in the RFC Editor's queue. Subsequently, the RTCWEB WG identified a change that needed to be made in Section 4.5 related to multiplexing RTP and RTCP. The change is reflected in draft-ietf-rtcweb-rtp-usage-26 and copied below.

The IESG will not revisit its decision to approve this document for publication unless it receives feedback from the community indicating a need to do so. Please send substantive comments to the mailing list by 2016-04-13. Exceptionally, comments may be sent to instead.

The change is:


 If SDP is used for signalling, this
 negotiation MUST use the attributes defined in [RFC5761].  For
 backwards compatibility, implementations are also REQUIRED to support
 RTP and RTCP sent on separate transport-layer flows.


 If SDP is used for signalling, this
 negotiation MUST use the mechanism defined in [RFC5761].
 Implementations can also support sending RTP and RTCP on separate
 transport-layer flows, but this is OPTIONAL to implement.  If an
 implementation does not support RTP and RTCP sent on separate
 transport-layer flows, it MUST indicate that using the mechanism
 defined in [I-D.ietf-mmusic-mux-exclusive].
The document is available at