Where an IP phone has both a line CSS and a device CSS, the line CSS takes precedence over the device CSS.
Checked 2026-09-30
the line CSS takes precedence over the device CSS.
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- calling search space
- Deployment
- on-premises
- Region
- not restricted
- Release range
- not release-scoped in source
- Checked
- 2026-09-30
Sources
- Configure Partition and Calling Search Space — Cisco Systems · tier 2 current vendor documentation · Configure Partition and Calling Search Space > CSS discussion (line and device CSS)
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting Unified CM call routing failures and reorder tone: source note cucm-call-routing-failures-line-css-precedence. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-call-routing-failures-line-css-precedence
BibTeX
@misc{warmtransfer-claim-cucm-call-routing-failures-line-css-precedence,
title = {Troubleshooting Unified CM call routing failures and reorder tone: source note cucm-call-routing-failures-line-css-precedence},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-call-routing-failures-line-css-precedence},
note = {Source note cucm-call-routing-failures-line-css-precedence, checked 2026-09-30}
}