On an IP phone that has both a line CSS and a device CSS, Cisco states that the line CSS takes precedence over the device CSS.

Checked 2026-09-24

the line CSS takes precedence over the device CSS.
Vendor
Cisco
Product
Unified Communications Manager
Subsystem
partitions and CSS
Deployment
on-premises
Region
not restricted
Release range
as of tech note dated 2016-05-05
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Unified CM translation and transformation patterns: source note cucm-translation-patterns-line-css-over-device. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-translation-patterns-line-css-over-device

BibTeX

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

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