RFC 9366: Multiple SIP Reason Header Field Values

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…

Read RFC 9366 on the RFC Editor

Outgoing relationships (3 related RFCs)

Updates, Normative reference — RFC 3326: The Reason Header Field for the Session Initiation Protocol (SIP)
Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 8174: Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words