A new Request for Comments is now available in online RFC libraries. RFC 8197 Title: A SIP Response Code for Unwanted Calls Author: H. Schulzrinne Status: Standards Track Stream: IETF Date: March 2017 Mailbox: henning.schulzrinne@fcc.gov Pages: 8 Characters: 19114 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-sipcore-status-unwanted-06.txt URL: https://www.rfc-editor.org/info/rfc8197 DOI: 10.17487/RFC8197 This document defines the 607 (Unwanted) SIP response code, allowing called parties to indicate that the call or message was unwanted. SIP entities may use this information to adjust how future calls from this calling party are handled for the called party or more broadly. This document is a product of the Session Initiation Protocol Core Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet Standards Track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the Official Internet Protocol Standards (https://www.rfc-editor.org/standards) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC