Microsoft forces TLS 1.2 on the Direct Routing SIP interface, and the SBC must support TLS 1.2 with one of four ECDHE-RSA cipher suites: AES256-GCM-SHA384, AES128-GCM-SHA256, AES256-SHA384 or AES128-SHA256.

Checked 2026-09-24

Vendor
Microsoft
Product
Microsoft Teams Phone
Subsystem
direct-routing-tls
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Setting up Microsoft Teams Direct Routing: source note teams-direct-routing-setup-tls12-cipher-suites. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-direct-routing-setup-tls12-cipher-suites

BibTeX

@misc{warmtransfer-claim-teams-direct-routing-setup-tls12-cipher-suites,
  title  = {Setting up Microsoft Teams Direct Routing: source note teams-direct-routing-setup-tls12-cipher-suites},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/teams-direct-routing-setup-tls12-cipher-suites},
  note   = {Source note teams-direct-routing-setup-tls12-cipher-suites, checked 2026-09-24}
}

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