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A SIP Response Code for Unwanted Calls

Document Type Replaced Internet-Draft (individual)
Expired & archived
Author Henning Schulzrinne
Last updated 2016-09-30
Replaced by draft-ietf-sipcore-status-unwanted
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-sipcore-status-unwanted
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document defines the 666 (Unwanted) SIP response code, allowing called parties to indicate that the call was unwanted. The terminating SIP entity may use this information to adjust future call handling behavior for this called party or more broadly.


Henning Schulzrinne

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