A Real-Time Transport Protocol (RTP) Extension Header for Mixer-to- client Audio Level Indication

Document Type Replaced Internet-Draft (individual)
Authors Emil Ivov  , Enrico Marocco  , Jonathan Lennox 
Last updated 2011-03-03 (latest revision 2011-01-16)
Replaced by RFC 6465
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IESG IESG state Replaced by draft-ietf-avtext-mixer-to-client-audio-level
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a mechanism for RTP-level mixers in audio conferences to deliver information about the audio level of the individual participants. Such audio level indicators are transported in the same RTP packets as the audio data they pertain to.


Emil Ivov (emcho@sip-communicator.org)
Enrico Marocco (enrico.marocco@telecomitalia.it)
Jonathan Lennox (jonathan@vidyo.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)