Call routing between Webex Calling and premises offers 2 settings for unknown numbers: Standard Behavior, which Cisco gives as the default and the recommended option for interoperability with an on-premises PBX, and Legacy Behavior, which provides backward compatibility with the older local gateway behaviour and which Cisco does not recommend when dial plans are configured.

Checked 2026-09-15

Vendor
Cisco
Product
Webex Calling
Subsystem
Dial plans
Deployment
not restricted
Region
not restricted
Release range
not restricted
Checked
2026-09-15

Sources

Cite this note

APA

WarmTransfer. (2026, September 15). Trunks route groups and dial plans in Control Hub: source note wxtrk-unknown-number-handling-has-a-legacy-mode. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxtrk-unknown-number-handling-has-a-legacy-mode

BibTeX

@misc{warmtransfer-claim-wxtrk-unknown-number-handling-has-a-legacy-mode,
  title  = {Trunks route groups and dial plans in Control Hub: source note wxtrk-unknown-number-handling-has-a-legacy-mode},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/wxtrk-unknown-number-handling-has-a-legacy-mode},
  note   = {Source note wxtrk-unknown-number-handling-has-a-legacy-mode, checked 2026-09-15}
}

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