RFC 8197 · PROPOSED STANDARD · 2017
SUN · 14 JUN 2026
A SIP Response Code for Unwanted Calls
Overview
RFC 8197, “A SIP Response Code for Unwanted Calls”, is a Proposed Standard document published in July 2017 by H. Schulzrinne. The canonical text is published by the RFC Editor.
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.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 8197 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 2017
- RFC 8196 IS-IS Autoconfiguration
- RFC 8198 Aggressive Use of DNSSEC-Validated Cache
- RFC 8195 Use of BGP Large Communities
- RFC 8199 YANG Module Classification
- RFC 8194 A YANG Data Model for LMAP Measurement Agents
- RFC 8200 Internet Protocol, Version 6 Specification
- RFC 8193 Information Model for Large-Scale Measurement Platforms
- RFC 8201 Path MTU Discovery for IP version 6