Source note · SIP registration failures
RFC 3261 lets a registrar send 423 only when the requested interval is greater than zero, less than one hour and below the registrar's configured minimum.
Checked 2026-09-25
- Vendor
- not restricted
- Product
- SIP
- Subsystem
- registration
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3261
- Checked
- 2026-09-25
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · Section 10.3 Processing REGISTER Requests, step 7
Cite this note
APA
WarmTransfer. (2026, September 25). SIP registration failures: source note sip-registration-failures-423-conditions. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-registration-failures-423-conditions
BibTeX
@misc{warmtransfer-claim-sip-registration-failures-423-conditions,
title = {SIP registration failures: source note sip-registration-failures-423-conditions},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-registration-failures-423-conditions},
note = {Source note sip-registration-failures-423-conditions, checked 2026-09-25}
}