Microsoft's December 12, 2025 Direct Routing update said that in the future all SBC certificates would have to include the Client Authentication EKU, without giving a date.
Checked 2026-10-02
- Vendor
- Microsoft
- Product
- Teams Direct Routing
- Subsystem
- SBC certificate
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- entry dated 2025-12-12
- Checked
- 2026-10-02
Sources
- What's New Direct Routing — Microsoft · tier 2 current vendor documentation · Entry 'Update on upcoming certificate changes (December 12, 2025)': Summary, second bullet
Cite this note
APA
WarmTransfer. (2026, October 2). SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-teams-dr-eku-future-stated. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-teams-dr-eku-future-stated
BibTeX
@misc{warmtransfer-claim-sip-trunk-authentication-models-teams-dr-eku-future-stated,
title = {SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-teams-dr-eku-future-stated},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-teams-dr-eku-future-stated},
note = {Source note sip-trunk-authentication-models-teams-dr-eku-future-stated, checked 2026-10-02}
}