In SBA mode, emergency calls can still be placed but location information is not shared, and SBA does not support emergency call routing policies; emergency dial strings bypass normalization, so they fail unless the regular voice routing policy has a matching pattern.

Checked 2026-09-24

SBA does not support Emergency Call Routing Policies.

Vendor

Microsoft

Product

Teams Phone

Subsystem

Direct Routing - SBA - emergency

Deployment

multi-tenant

Region

not restricted

Release range

current as of 2026-09-24

Checked

2026-09-24

Sources

• Survivable Branch Appliance for Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · Direct Routing SBA, section 'Known issues and considerations', 'In SBA mode, the following user actions aren't supported'

Cite this note

APA

WarmTransfer. (2026, September 24). Microsoft teams phone: source note microsoft-teams-phone-sba-emergency-limits. WarmTransfer. https://warmtransfer.net/knowledge/claims/microsoft-teams-phone-sba-emergency-limits

BibTeX

@misc{warmtransfer-claim-microsoft-teams-phone-sba-emergency-limits,
  title  = {Microsoft teams phone: source note microsoft-teams-phone-sba-emergency-limits},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/microsoft-teams-phone-sba-emergency-limits},
  note   = {Source note microsoft-teams-phone-sba-emergency-limits, checked 2026-09-24}
}

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