microsoft teams phone · stub
Teams Phone Direct Routing and SBC certification
Verified 2026-09-06 · 10 claims · sources tier 2
Also known as Direct Routing.
Stub. This topic has 10 verified claims and no published article. The claims below are exactly what the corpus holds today.
So far, no summary has been generated for this topic. The claims below are what the corpus currently holds.
See also
Constrained by
- Remote site survivability patternsstub — SBA is a constrained Direct Routing branch-outage design
Depends on
- Session border controller selection and certificationstub — Direct Routing requires a Microsoft-certified customer-managed SBC
- Teams voice routing policies and dial plansstub — SBC connectivity becomes usable through dial plans routes usages and policies
Parallels
- Local Gateway design and configuration — Both are BYO-carrier SBC models for a cloud PBX
Referenced by
- Microsoft Teams Phone architecture and licensing — Customer-managed SBC path for carriers PBXs analog devices and specialized routing
Claims
| # | Claim | Status | Confidence | Verified |
|---|---|---|---|---|
| 1 | Direct Routing connects customer telephony infrastructure to Teams Phone through a supported customer-provided Session Border Controller. Plan Direct Routing · Plan Direct Routing, introduction | fact | 0.90 | 2026-09-06 |
| 2 | Microsoft's Direct Routing plan puts infrastructure and licensing before SBC selection and connectivity then routing and user assignment and requires inbound outbound emergency failover policy and call-quality validation before production rollout. Plan Direct Routing · Deployment overview and Verify your deployment | fact | 0.90 | 2026-09-06 |
| 3 | The current Direct Routing plan requires a Microsoft-certified SBC telephony trunks a Microsoft 365 tenant with online users a verified domain a public IP address and DNS record for the SBC FQDN a public certificate and permitted signaling and media paths. Plan Direct Routing · Infrastructure requirements table | fact | 0.90 | 2026-09-06 |
| 4 | Microsoft states that Direct Routing is not supported in Islands mode. Plan Direct Routing · Licensing requirements, note after the list | fact | 0.90 | 2026-09-06 |
| 5 | A Direct Routing SBC FQDN must belong to a verified Microsoft 365 tenant domain and cannot use the default onmicrosoft.com domain. Plan Direct Routing · SBC domain names | fact | 0.90 | 2026-09-06 |
| 6 | Microsoft documents Direct Routing alongside other Teams Phone PSTN models and names third-party PBXs analog devices and specialized routing as uses for the Direct Routing leg. Plan Direct Routing · Direct Routing with Calling Plan and Operator Connect | fact | 0.90 | 2026-09-06 |
| 7 | Microsoft states that a tenant using Continuous Access Evaluation tokens may have only about 30 minutes of SBA operation. Survivable Branch Appliance for Direct Routing · Known issues and considerations, CAE token bullet | fact | 0.90 | 2026-09-06 |
| 8 | In SBA mode web and virtual-machine clients are unsupported emergency location information is not shared and Teams Emergency Call Routing Policies are unsupported. Survivable Branch Appliance for Direct Routing · How it works and Known issues and considerations | fact | 0.90 | 2026-09-06 |
| 9 | The Direct Routing SBA requires Media Bypass TLS 1.2 and firewall access for its documented client SBC NTP and Microsoft 365 communication ports. Survivable Branch Appliance for Direct Routing · Prerequisites | fact | 0.90 | 2026-09-06 |
| 10 | A Direct Routing Survivable Branch Appliance supports local PSTN calling during a Microsoft-cloud connectivity outage when the branch intranet and SBC remain reachable. Survivable Branch Appliance for Direct Routing · Survivable Branch Appliance, opening scenario | fact | 0.90 | 2026-09-06 |
Sources
tier 2 current vendor documentation
Plan Direct Routing
tier 2 current vendor documentation
Survivable Branch Appliance for Direct Routing
Cite this page
APA
WarmTransfer. (2026, September 6). Teams Phone Direct Routing and SBC certification. WarmTransfer. https://warmtransfer.net/knowledge/teams-direct-routing
BibTeX
@misc{warmtransfer-teams-direct-routing,
title = {Teams Phone Direct Routing and SBC certification},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/teams-direct-routing},
note = {Verified 2026-09-06}
}