Zoom's 2026 porting guide recommends keeping legacy service in parallel for at least 48 to 72 hours after each porting batch completes as a fallback.
Checked 2026-10-02
- Vendor
- Zoom
- Product
- Zoom Phone
- Subsystem
- cutover-planning
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- as of 2026-06-09
- Checked
- 2026-10-02
Sources
- Number porting guide for IT teams: what to know in 2026 — Zoom · tier 3 vendor-maintained repositories · Step-by-step process section
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-zoom-parallel-48-72h. WarmTransfer. https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-zoom-parallel-48-72h
BibTeX
@misc{warmtransfer-claim-post-port-routing-troubleshooting-zoom-parallel-48-72h,
title = {Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-zoom-parallel-48-72h},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-zoom-parallel-48-72h},
note = {Source note post-port-routing-troubleshooting-zoom-parallel-48-72h, checked 2026-10-02}
}