Zoom tries backup SBCs when the primary fails or returns 403, 408, 480, 488, 500, 502, 503, 504 or 606, first within the same route group and then in the regional alternative.

Checked 2026-09-25

Vendor
Zoom
Product
Zoom Phone
Subsystem
byoc-p-routing
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). Setting up Zoom Phone BYOC with an SBC: source note zoom-phone-byoc-setup-failover-codes. WarmTransfer. https://warmtransfer.net/knowledge/claims/zoom-phone-byoc-setup-failover-codes

BibTeX

@misc{warmtransfer-claim-zoom-phone-byoc-setup-failover-codes,
  title  = {Setting up Zoom Phone BYOC with an SBC: source note zoom-phone-byoc-setup-failover-codes},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/zoom-phone-byoc-setup-failover-codes},
  note   = {Source note zoom-phone-byoc-setup-failover-codes, checked 2026-09-25}
}

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