For outbound calls, Unified CM selects the calling party transformation mask using the pre-transform calling party number (the extension assigned to the IP phone), even if the number was transformed at route pattern or route group level.

Checked 2026-09-24

The calling party transformation mask is selected based on the pre transform calling party number (extension assigned to the IP Phone).
Vendor
Cisco
Product
Unified Communications Manager
Subsystem
transformation patterns
Deployment
on-premises
Region
not restricted
Release range
Release 15 and SUs, current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Unified CM translation and transformation patterns: source note cucm-translation-patterns-mask-uses-pretransform-cgpn. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-translation-patterns-mask-uses-pretransform-cgpn

BibTeX

@misc{warmtransfer-claim-cucm-translation-patterns-mask-uses-pretransform-cgpn,
  title  = {Unified CM translation and transformation patterns: source note cucm-translation-patterns-mask-uses-pretransform-cgpn},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-translation-patterns-mask-uses-pretransform-cgpn},
  note   = {Source note cucm-translation-patterns-mask-uses-pretransform-cgpn, checked 2026-09-24}
}

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