Spam feedback for SIP

Document Type Expired Internet-Draft (individual)
Authors Saverio Niccolini  , Kai Fischer  , Dan Wing  , Martin Stiemerling  , Hannes Tschofenig 
Last updated 2008-02-15
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document gives on overview of possible mechanisms for SIP UAs to feedback spam information to the system (e.g. other SIP entities like upstream SIP proxies) thus they can use this information for handling subsequent calls (e.g. blacklist the caller, input this info to reputation systems, compute spam-specific caller statistics, etc.).


Saverio Niccolini (
Kai Fischer (
Dan Wing (
Martin Stiemerling (
Hannes Tschofenig (

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