Source note · Unified CM Device Mobility

The TAC technote advises that the phone use a device CSS rather than a directory-number line CSS for Device Mobility, and that a roaming CSS be configured so the roaming device can place calls.

Checked 2026-09-25

Vendor: Cisco
Product: Unified Communications Manager
Subsystem: calling-search-space
Deployment: on-premises
Region: not restricted
Release range: tested on 11.5.1
Checked: 2026-09-25

Sources

Configure and Troubleshoot Device Mobility — Cisco Systems · tier 2 current vendor documentation · Configure section, notes after device pool configuration

Cite this note

APA

WarmTransfer. (2026, September 25). Unified CM Device Mobility: source note cucm-device-mobility-device-css-tac. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-device-mobility-device-css-tac

BibTeX

@misc{warmtransfer-claim-cucm-device-mobility-device-css-tac,
  title  = {Unified CM Device Mobility: source note cucm-device-mobility-device-css-tac},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-device-mobility-device-css-tac},
  note   = {Source note cucm-device-mobility-device-css-tac, checked 2026-09-25}
}

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