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A SIP Response Code for Unwanted Calls (RFC8197)

IP.com Disclosure Number: IPCOM000250435D
Original Publication Date: 2017-Jul-01
Included in the Prior Art Database: 2017-Jul-14
Document File: 16 page(s) / 19K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Schulzrinne: AUTHOR

Abstract

In many countries, an increasing number of calls are unwanted [RFC5039]: they might be fraudulent or illegal telemarketing or maybe the receiving party does not want to be disturbed by, say, surveys or solicitation by charities. Carriers and other service providers may want to help their subscribers avoid receiving such calls, using a variety of global or user-specific filtering algorithms. One input into such algorithms is user feedback. User feedback may be offered through smartphone apps, APIs or within the context of a SIP- initiated call. This document addresses feedback within the SIP call. Here, the called party either rejects the SIP [RFC3261] request as unwanted or terminates the session with a BYE request after answering the call. INVITE and MESSAGE requests are most likely to trigger such a response.

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Internet Engineering Task Force (IETF)                    H. Schulzrinne Request for Comments: 8197                                           FCC Category: Standards Track                                      July 2017 ISSN: 2070-1721

                  A SIP Response Code for Unwanted Calls

Abstract

   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.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc8197.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    (http://trustee.ietf.org/license-info) in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

 Schulzrinne                  Standards Track                    [Page 1]
 RFC 8197                     Status Unwanted                   July 2017

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2    2.  Normative Language  . . . . . . . . . . . . . . . . . . . . .   3    3.  Motivation  . . . . . . . . . . . . . . . . . . . . . . . . .   3    4.  Behavior of SIP Entities  . . . . . . . . . . . . . . . . . .   3    5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5      5.1.  SIP Response Code . . . . . . . . . . . . . . . . . . . .   5      5.2.  SIP Global Feature-Capability Indicator . . . . . . . . .   5    6.  Security Considerations . . . . . . . . . . . . . . . . . . .   6    7.  References  . . . . . . . . . . . . . . . . . . . . . ....