Zoom requires BYOC-P SBCs to support SIP (RFC 3261), DTMF per RFC 2833, topology hiding (RFC 5853) and SIP Early Offer on INVITEs sent to Zoom.

Checked 2026-09-24

Vendor
Zoom
Product
Zoom Phone; Zoom Contact Center
Subsystem
byoc-p-sbc
Deployment
hybrid
Region
not restricted
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Zoom Phone routing and PSTN connectivity: source note zoom-phone-routing-sbc-general-reqs. WarmTransfer. https://warmtransfer.net/knowledge/claims/zoom-phone-routing-sbc-general-reqs

BibTeX

@misc{warmtransfer-claim-zoom-phone-routing-sbc-general-reqs,
  title  = {Zoom Phone routing and PSTN connectivity: source note zoom-phone-routing-sbc-general-reqs},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/zoom-phone-routing-sbc-general-reqs},
  note   = {Source note zoom-phone-routing-sbc-general-reqs, checked 2026-09-24}
}

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