Early Media and Ringback Tone Generation in the Session Initiation Protocol

Document Type Expired Internet-Draft (individual)
Authors Gonzalo Camarillo  , Henning Schulzrinne 
Last updated 2003-07-01
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This Internet-Draft is no longer active.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 how to manage early media in SIP using two models; the gateway model and the application server model. It also describes which inputs need to be taken into consideration to define local policies for ringback tone generation.


Gonzalo Camarillo (gonzalo.camarillo@ericsson.com)
Henning Schulzrinne (hgs+geopriv@cs.columbia.edu)

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