For PSTN calling during a ZPLS survivability event, the customer must integrate ZPLS with an SBC that has survivable PSTN connectivity and routes calls locally to the ZPLS nodes instead of the cloud.

Checked 2026-09-25

Vendor
Zoom
Product
Zoom Phone
Subsystem
Local Survivability
Deployment
hybrid
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). UC disaster recovery and business continuity: source note uc-disaster-recovery-zpls-pstn-sbc. WarmTransfer. https://warmtransfer.net/knowledge/claims/uc-disaster-recovery-zpls-pstn-sbc

BibTeX

@misc{warmtransfer-claim-uc-disaster-recovery-zpls-pstn-sbc,
  title  = {UC disaster recovery and business continuity: source note uc-disaster-recovery-zpls-pstn-sbc},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/uc-disaster-recovery-zpls-pstn-sbc},
  note   = {Source note uc-disaster-recovery-zpls-pstn-sbc, checked 2026-09-25}
}

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