Source note · SIP registration failures
RFC 3261 registrar processing returns 403 Forbidden when the authenticated user is not authorized to change registrations for the address-of-record in the REGISTER.
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, authorization step
Cite this note
APA
WarmTransfer. (2026, September 25). SIP registration failures: source note sip-registration-failures-403-not-authorized. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-registration-failures-403-not-authorized
BibTeX
@misc{warmtransfer-claim-sip-registration-failures-403-not-authorized,
title = {SIP registration failures: source note sip-registration-failures-403-not-authorized},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-registration-failures-403-not-authorized},
note = {Source note sip-registration-failures-403-not-authorized, checked 2026-09-25}
}