RFC 7433 · PROPOSED STANDARD · 2015

A Mechanism for Transporting User-to-User Call Control Information in SIP

Overview

RFC 7433, “A Mechanism for Transporting User-to-User Call Control Information in SIP”, is a Proposed Standard document published in January 2015 by A. Johnston, J. Rafferty. The canonical text is published by the RFC Editor.

Abstract

There is a class of applications that benefit from using SIP to exchange User-to-User Information (UUI) data during session establishment. This information, known as call control UUI data, is a small piece of data inserted by an application initiating the session and utilized by an application accepting the session. The syntax and semantics for the UUI data used by a specific application are defined by a UUI package. This UUI data is opaque to SIP and its function is unrelated to any basic SIP function. This document defines a new SIP header field, User-to-User, to transport UUI data, along with an extension mechanism.

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 7433 is hosted at rfc-editor.org. Available in TXT,HTML.

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