RTP Payload Format for the Speex Codec

Document Type Replaced Internet-Draft (individual)
Last updated 2009-02-24 (latest revision 2004-03-09)
Replaced by draft-ietf-avt-rtp-speex
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Speex is an open-source voice codec suitable for use in Voice over IP (VoIP) type applications. This document describes the payload format for Speex generated bit streams within an RTP packet. Also included here are the necessary details for the use of Speex with the Session Description Protocol (SDP) and a preliminary method of using Speex within H.323 applications.


Greg Herlein (gherlein@herlein.com)

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