Problem Statement and Requirements for Transporting User-to-User Call Control Information in SIP
RFC 6567, “Problem Statement and Requirements for Transporting User-to-User Call Control Information in SIP”, is an Informational document published in April 2012 by A. Johnston, L. Liess. The canonical text is published by the RFC Editor.
Abstract
This document introduces the transport of call control User-to-User Information (UUI) using the Session Initiation Protocol (SIP) and develops several requirements for a new SIP mechanism. Some SIP sessions are established by or related to a non-SIP application. This application may have information that needs to be transported between the SIP User Agents during session establishment. In addition to interworking with the Integrated Services Digital Network (ISDN) UUI Service, this extension will also be used for native SIP endpoints requiring application UUI. This document is not an Internet Standards Track specification; it is published for informational purposes.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 6567 is hosted at rfc-editor.org. Available in TXT,HTML.
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