The Session Initiation Protocol P-User-Database Private-Header
RFC 4457, “The Session Initiation Protocol P-User-Database Private-Header”, is an Informational document published in April 2006 by G. Camarillo, G. Blanco. The canonical text is published by the RFC Editor.
Abstract
This document specifies the Session Initiation Protocol (SIP) P-User-Database Private-Header (P-header). This header field is used in the 3rd-Generation Partnership Project (3GPP) IMS (IP Multimedia Subsystem) to provide SIP registrars and SIP proxy servers with the address of the database that contains the user profile of the user that generated a particular request. This memo provides information for the Internet community.
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 4457 is hosted at rfc-editor.org. Available in TXT,HTML.
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