During a PSTN connection change to Cisco Calling Plans, all portable numbers keep working apart from a short interruption at the scheduled port completion time.

Checked 2026-09-25

All portable numbers remain functional except for a small interruption during the scheduled porting completion time.
Vendor
Cisco
Product
Webex Calling
Subsystem
PSTN connection change
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Porting numbers to Webex Calling: source note webex-calling-number-porting-migration-brief-outage. WarmTransfer. https://warmtransfer.net/knowledge/claims/webex-calling-number-porting-migration-brief-outage

BibTeX

@misc{warmtransfer-claim-webex-calling-number-porting-migration-brief-outage,
  title  = {Porting numbers to Webex Calling: source note webex-calling-number-porting-migration-brief-outage},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/webex-calling-number-porting-migration-brief-outage},
  note   = {Source note webex-calling-number-porting-migration-brief-outage, checked 2026-09-25}
}

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