Multiple SIP Reason Header Field Values
RFC 9366, “Multiple SIP Reason Header Field Values”, is a Proposed Standard document published in March 2023 by R. Sparks. It updates RFC 3326. The canonical text is published by the RFC Editor.
Abstract
The SIP Reason header field as defined in RFC 3326 allows only one Reason value per protocol value. Experience with more recently defined protocols shows it is useful to allow multiple values with the same protocol value. This document updates RFC 3326 to allow multiple values for an indicated registered protocol when that protocol defines what the presence of multiple values means.
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 9366 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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