Source note · SIP registration failures
The RFC 3665 contact-list update example shows an authenticated REGISTER being accepted with 200 OK without a new 401 challenge.
Checked 2026-09-25
- Vendor
- not restricted
- Product
- SIP
- Subsystem
- registration
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3665
- Checked
- 2026-09-25
Sources
- RFC 3665: Session Initiation Protocol (SIP) Basic Call Flow Examples — RFC Editor / IETF · tier 1 standards and regulators · Section 2.2 Update of Contact List
Cite this note
APA
WarmTransfer. (2026, September 25). SIP registration failures: source note sip-registration-failures-update-no-rechallenge. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-registration-failures-update-no-rechallenge
BibTeX
@misc{warmtransfer-claim-sip-registration-failures-update-no-rechallenge,
title = {SIP registration failures: source note sip-registration-failures-update-no-rechallenge},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-registration-failures-update-no-rechallenge},
note = {Source note sip-registration-failures-update-no-rechallenge, checked 2026-09-25}
}