The ZPLS module accepts no SIP registrations unless its OPTIONS keepalive to the cloud has failed, so a failover test must block both device-to-cloud and module-to-cloud traffic.

Checked 2026-10-01

The ZPLS module will not accept SIP Registrations unless the OPTIONS keepalive ping between it and the cloud has failed.
Vendor
Zoom
Product
Zoom Phone Local Survivability
Subsystem
failover testing
Deployment
hybrid
Region
not restricted
Release range
current as of 2026-10-01
Checked
2026-10-01

Sources

Cite this note

APA

WarmTransfer. (2026, October 1). Setting up Zoom Phone local survivability with Zoom Node: source note zoom-phone-local-survivability-setup-options-must-fail. WarmTransfer. https://warmtransfer.net/knowledge/claims/zoom-phone-local-survivability-setup-options-must-fail

BibTeX

@misc{warmtransfer-claim-zoom-phone-local-survivability-setup-options-must-fail,
  title  = {Setting up Zoom Phone local survivability with Zoom Node: source note zoom-phone-local-survivability-setup-options-must-fail},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/zoom-phone-local-survivability-setup-options-must-fail},
  note   = {Source note zoom-phone-local-survivability-setup-options-must-fail, checked 2026-10-01}
}

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