Source note · Setting up Microsoft Teams Direct Routing

FailoverResponseCodes defaults to 408, 503 and 504 and makes Direct Routing try another SBC in the user's voice routing policy on those responses to an initial INVITE, but only when no prior non-100 provisional response was received.

Checked 2026-09-24

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

Sources

Connect your Session Border Controller (SBC) to Direct Routing — Microsoft · tier 2 current vendor documentation · SBC settings table, Failover response codes row

Cite this note

APA

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

BibTeX

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

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