Microsoft response code 510546 with SIP 403 ('Get Outbound Direct Routing - no trunk config found by LBR selection criteria') is expected when LBR restricts toll bypass at the user's location; otherwise it indicates an LBR misconfiguration.

Checked 2026-09-25

Vendor
Microsoft
Product
Teams Phone Direct Routing
Subsystem
troubleshooting
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Teams location-based routing: source note teams-location-based-routing-code-510546. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-location-based-routing-code-510546

BibTeX

@misc{warmtransfer-claim-teams-location-based-routing-code-510546,
  title  = {Teams location-based routing: source note teams-location-based-routing-code-510546},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/teams-location-based-routing-code-510546},
  note   = {Source note teams-location-based-routing-code-510546, checked 2026-09-25}
}

Read in context