Source note · SIP TLS handshake failures on trunks
TLS defines distinct certificate alerts: bad_certificate (42), unsupported_certificate (43), certificate_revoked (44), certificate_expired (45, also sent for not-yet-valid certificates), certificate_unknown (46) and unknown_ca (48, for a chain that cannot be anchored in a trusted CA).
Checked 2026-09-25
- Vendor
- IETF
- Product
- TLS
- Subsystem
- TLS alerts
- Deployment
- any
- Region
- not restricted
- Release range
- TLS 1.3 (RFC 8446)
- Checked
- 2026-09-25
Sources
- RFC 8446: The Transport Layer Security (TLS) Protocol Version 1.3 — IETF · tier 1 standards and regulators · Section 6.2
Cite this note
APA
WarmTransfer. (2026, September 25). SIP TLS handshake failures on trunks: source note sip-tls-handshake-failures-rfc8446-cert-alerts. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-tls-handshake-failures-rfc8446-cert-alerts
BibTeX
@misc{warmtransfer-claim-sip-tls-handshake-failures-rfc8446-cert-alerts,
title = {SIP TLS handshake failures on trunks: source note sip-tls-handshake-failures-rfc8446-cert-alerts},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-tls-handshake-failures-rfc8446-cert-alerts},
note = {Source note sip-tls-handshake-failures-rfc8446-cert-alerts, checked 2026-09-25}
}