Request Authorization through Dialog Identification in the Session Initiation Protocol
RFC 4538, “Request Authorization through Dialog Identification in the Session Initiation Protocol”, is a Proposed Standard document published in June 2006 by J. Rosenberg. The canonical text is published by the RFC Editor.
Abstract
This specification defines the Target-Dialog header field for the Session Initiation Protocol (SIP), and the corresponding option tag, tdialog. This header field is used in requests that create SIP dialogs. It indicates to the recipient that the sender is aware of an existing dialog with the recipient, either because the sender is on the other side of that dialog, or because it has access to the dialog identifiers. The recipient can then authorize the request based on this awareness. [STANDARDS-TRACK]
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.
The canonical text of RFC 4538 is hosted at rfc-editor.org. Available in TXT,HTML.
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