Source note · Setting up CUBE as a Microsoft Teams Direct Routing SBC

When Direct Routing sees incoming OPTIONS from an SBC it starts sending its own OPTIONS to the SBC FQDN given in the Contact header of those incoming OPTIONS.

Checked 2026-09-30

Vendor: Microsoft
Product: Microsoft Teams Phone
Subsystem: Direct Routing OPTIONS
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-30
Checked: 2026-09-30

Sources

Connect your Session Border Controller (SBC) to Direct Routing — Microsoft · tier 2 current vendor documentation · Verify the SBC connection > Validate SIP options

Cite this note

APA

WarmTransfer. (2026, September 30). Setting up CUBE as a Microsoft Teams Direct Routing SBC: source note cube-teams-direct-routing-setup-options-to-contact-fqdn. WarmTransfer. https://warmtransfer.net/knowledge/claims/cube-teams-direct-routing-setup-options-to-contact-fqdn

BibTeX

@misc{warmtransfer-claim-cube-teams-direct-routing-setup-options-to-contact-fqdn,
  title  = {Setting up CUBE as a Microsoft Teams Direct Routing SBC: source note cube-teams-direct-routing-setup-options-to-contact-fqdn},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cube-teams-direct-routing-setup-options-to-contact-fqdn},
  note   = {Source note cube-teams-direct-routing-setup-options-to-contact-fqdn, checked 2026-09-30}
}

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