Source note · DNS SRV and service discovery for SIP
Under RFC 5922 a SIP TLS client compares the certificate identities against the original domain of the URI it passed into RFC 3263 resolution, not against the SRV target host name.
Checked 2026-09-24
the client MUST compare the original domain portion of the SIP AUS used as input to the RFC 3263 server location procedures to the SIP domain identities obtained from the certificate
- Vendor
- IETF
- Product
- SIP over TLS
- Subsystem
- TLS identity
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 5922 (June 2010)
- Checked
- 2026-09-24
Sources
- RFC 5922: Domain Certificates in the Session Initiation Protocol (SIP) — RFC Editor / IETF · tier 1 standards and regulators · Section 7.3 Client Behavior
Cite this note
APA
WarmTransfer. (2026, September 24). DNS SRV and service discovery for SIP: source note dns-srv-voice-rfc5922-original-domain. WarmTransfer. https://warmtransfer.net/knowledge/claims/dns-srv-voice-rfc5922-original-domain
BibTeX
@misc{warmtransfer-claim-dns-srv-voice-rfc5922-original-domain,
title = {DNS SRV and service discovery for SIP: source note dns-srv-voice-rfc5922-original-domain},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dns-srv-voice-rfc5922-original-domain},
note = {Source note dns-srv-voice-rfc5922-original-domain, checked 2026-09-24}
}