RFC 6432 states that the presence of a Reason header field in a response does not affect the treatment of the response.
Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- Reason header
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 6432 as published
- Checked
- 2026-10-02
Sources
- RFC 6432: Carrying Q.850 Codes in Reason Header Fields in SIP (Session Initiation Protocol) Responses — IETF / RFC Editor · tier 1 standards and regulators · Sections 3-4 (exact section unconfirmed)
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting SIP 404 Not Found and 484 Address Incomplete call failures: source note sip-404-484-troubleshooting-rfc6432-no-treatment. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-404-484-troubleshooting-rfc6432-no-treatment
BibTeX
@misc{warmtransfer-claim-sip-404-484-troubleshooting-rfc6432-no-treatment,
title = {Troubleshooting SIP 404 Not Found and 484 Address Incomplete call failures: source note sip-404-484-troubleshooting-rfc6432-no-treatment},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-404-484-troubleshooting-rfc6432-no-treatment},
note = {Source note sip-404-484-troubleshooting-rfc6432-no-treatment, checked 2026-10-02}
}