Technical Summary
This memo specifies how Explicit Congestion Notification (ECN) can be
used with the Real-time Transport Protocol (RTP) running over UDP,
using RTP Control Protocol (RTCP) as a feedback mechanism. It
defines a new RTCP Extended Report (XR) block for periodic ECN
feedback, a new RTCP transport feedback message for timely reporting
of congestion events, and a Session Traversal Utilities for NAT
(STUN) extension used in the optional initialization method using
Interactive Connectivity Establishment (ICE). Signalling and
procedures for negotiation of capabilities and initialization methods
are also defined.
Working Group Summary
There were no controversy about the proposed solution and there was
consensus on all discussion points
Document Quality
There is at least one research implementation and there is fairly strong commercial
interest. There was interest in this work by other standard bodies like 3GPP and
ITU-T SG16 who need to reference it.
The SDP attributes and ICE options defined in the document were sent to
review in MMUSIC on September 30, 2011
Personnel
Roni Even is the document shepherd.
Robert Sparks is the responsible area director.