Title: Early Media and Ringing Tone Generation in the Session Initiation Protocol (SIP)
Author(s): G. Camarillo, H. Schulzrinne.
Status: INFORMATIONAL
Date: Dec 2004
Length: 31692
This document describes how to manage early media in the Session Initiation Protocol (SIP) using two models: the gateway model and the application server model. It also describes the inputs one needs to consider in defining local policies for ringing tone generation.
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