Source note · Zoom Phone routing and PSTN connectivity
With ZPLS, the customer SBC must route inbound PSTN calls to the primary and secondary Zoom data center SIP zones first, with the ZPLS module as the tertiary choice used only during survivability events.
Checked 2026-09-24
- Vendor
- Zoom
- Product
- Zoom Phone Local Survivability
- Subsystem
- survivability
- Deployment
- hybrid
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- PSTN Integration Considerations | Zoom Technical Library — Zoom Communications · tier 2 current vendor documentation · SBC Integration Considerations
Cite this note
APA
WarmTransfer. (2026, September 24). Zoom Phone routing and PSTN connectivity: source note zoom-phone-routing-zpls-sbc-route-order. WarmTransfer. https://warmtransfer.net/knowledge/claims/zoom-phone-routing-zpls-sbc-route-order
BibTeX
@misc{warmtransfer-claim-zoom-phone-routing-zpls-sbc-route-order,
title = {Zoom Phone routing and PSTN connectivity: source note zoom-phone-routing-zpls-sbc-route-order},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/zoom-phone-routing-zpls-sbc-route-order},
note = {Source note zoom-phone-routing-zpls-sbc-route-order, checked 2026-09-24}
}