RFC 7647 · PROPOSED STANDARD · 2015

Clarifications for the Use of REFER with RFC 6665

Overview

RFC 7647, “Clarifications for the Use of REFER with RFC 6665”, is a Proposed Standard document published in September 2015 by R. Sparks, A.B. Roach. It updates RFC 3515. The canonical text is published by the RFC Editor.

Abstract

The SIP REFER method relies on the SIP-Specific Event Notification framework. That framework was revised by RFC 6665. This document highlights the implications of the requirement changes in RFC 6665, and updates the definition of the REFER method described in RFC 3515 to clarify and disambiguate the impact of those changes.

Abstract as published in the RFC, via rfc-editor.org.

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 7647 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC updates
RFC 3515
Other RFCs from 2015

Who Is Online

In total there are 108 users online: 0 registered, 101 guests and 7 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: AhrefsBot Applebot Baiduspider Bingbot Other Bot PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372