Cited in: RFC 3326
2 RFCs mentioned in the text of RFC 3326 (The Reason Header Field for the Session Initiation Protocol (SIP))
| RFC | Title | Status | Date |
|---|---|---|---|
| 2119 | Key words for use in RFCs to Indicate Requirement Levels | Best Current Practice | March 1997 |
| 3261 | SIP: Session Initiation Protocol | Proposed Standard | July 2002 |