Claim record · SIP response codes and failure interpretation
SIP response codes fall into 6 classes: 1xx provisional 2xx success 3xx redirection 4xx request failure 5xx server failure and 6xx global failure.
fact · verified 2026-09-15
- Vendor
- IETF
- Product
- Session Initiation Protocol
- Subsystem
- response codes
- Deployment
- not restricted
- Region
- not restricted
- Release range
- current as of 2026-09-15
- Status
- fact
- Confidence
- 0.90
- Verified
- 2026-09-15
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · RFC 3261 section 21
Cite this claim
APA
WarmTransfer. (2026, September 15). SIP response codes and failure interpretation: claim sip-six-response-classes. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-six-response-classes
BibTeX
@misc{warmtransfer-claim-sip-six-response-classes,
title = {SIP response codes and failure interpretation: claim sip-six-response-classes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-six-response-classes},
note = {Claim sip-six-response-classes, verified 2026-09-15}
}