Microsoft's SBC connectivity troubleshooting article still says that if the SBC doesn't trust the SIP proxy certificate, you should download and install the Baltimore CyberTrust root on the SBC.

disputed · Checked 2026-09-25

Vendor
Microsoft
Product
Microsoft Teams Phone Direct Routing
Subsystem
tls-certificates
Deployment
multi-tenant
Region
not restricted
Release range
as printed in the article as of 2026-09-25
Status
disputed
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Troubleshooting Teams Direct Routing: source note teams-direct-routing-troubleshooting-baltimore-advice. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-direct-routing-troubleshooting-baltimore-advice

BibTeX

@misc{warmtransfer-claim-teams-direct-routing-troubleshooting-baltimore-advice,
  title  = {Troubleshooting Teams Direct Routing: source note teams-direct-routing-troubleshooting-baltimore-advice},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/teams-direct-routing-troubleshooting-baltimore-advice},
  note   = {Source note teams-direct-routing-troubleshooting-baltimore-advice, checked 2026-09-25}
}

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